On July 2, 2019, a total solar eclipse will pass over parts of Argentina and Chile.
Solar eclipses happen when the Moon passes directly between the Sun and Earth, casting its shadow onto Earth’s surface. Because the Moon’s orbit isn’t perfectly in line with the Sun and Earth, its shadow usually passes above or below Earth. But when it lines up just right, we get a solar eclipse!
People in the inner part of the Moon’s shadow — the umbra — have the chance to witness a total solar eclipse, while those in the outer part of the shadow — the penumbra — experience a partial solar eclipse.
The path of the total solar eclipse stretches across parts of Chile and Argentina. People outside this path may see a partial eclipse or no eclipse at all.
During a total solar eclipse, the Moon blocks out the Sun’s bright face, revealing its comparatively faint outer atmosphere, the corona. The corona is a dynamic region that is thought to hold the answers to questions about the fundamental physics of the Sun — like why the corona is so much hotter than the Sun’s surface and how the Sun’s constant outflow of material, the solar wind, is accelerated to such high speeds.
Image Credit: Miloslav Druckmüller, Peter Aniol, Shadia Habbal
Our Parker Solar Probe and the upcoming Solar Orbiter mission from the European Space Agency are exploring these questions by flying through the corona itself and taking unprecedented measurements of the conditions there. Plus, our newly-chosen PUNCH mission will create tiny, artificial eclipses in front of its cameras — using an instrument called a coronagraph — to study structures in the Sun’s corona and examine how it generates the solar wind.
Watching the eclipse
It’s never safe to look directly at the uneclipsed or partially eclipsed Sun – so you’ll need special solar viewing glasses or an indirect viewing method, like pinhole projection, to watch the eclipse.
For people in the path of totality, there will be a few brief moments when it is safe to look directly at the eclipse. Only once the Moon has completely covered the Sun and there is no sunlight shining is it safe to look at the eclipse. Make sure you put your eclipse glasses back on or return to indirect viewing before the first flash of sunlight appears around the Moon’s edge.
No matter where you are, you can watch the eclipse online! The Exploratorium will be streaming live views of the eclipse with commentary in both English and Spanish starting at 4 p.m. EDT / 1 p.m. PDT on July 2. Watch with us at nasa.gov/live!
Para más información e actualizaciones en español acerca del eclipse, sigue a @NASA_es en Twitter o vea esta hoja de hechos.
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It’s 1969 and Apollo 11 astronauts Buzz Aldrin and Neil Armstrong are the first humans to land on the Moon. In now iconic footage, Aldrin and Armstrong carefully assemble and maneuver an American flag to place on the lunar surface. The fabric unfurls, staying suspended without any wind to animate the stars and stripes. The flagpole sways precariously as the crew work to anchor it in the Moon’s low gravity at just 1/6th that of Earth’s.
How did this moment come about? On Flag Day, let’s dive behind-the-scenes of what led to getting the American flag on the Moon 50 years ago.
Image: Astronaut Buzz Aldrin poses for a photograph beside the deployed United States flag during the Apollo 11 mission.
Seeking to empower the nation, President John F. Kennedy gave us a grand charge. The human spaceflight program of the early 1960s was challenged to work on missions that sent humans to the surface of another world. Following President Kennedy’s death in 1963, President Richard Nixon stressed a more international perspective to the Apollo missions. To reconcile the need for global diplomacy with national interests, we appointed the Committee on Symbolic Activities for the First Lunar Landing.
Image: NASA Administrator Thomas Paine and President Richard Nixon are seen aboard the USS Hornet, Apollo 11’s splashdown recovery vessel.
The committee, and the U.S. at large, wanted to avoid violating the United Nations Outer Space Treaty, which prohibited any nation from taking possession of a celestial body. After some debate, they recommended that the flag only appear during the Apollo 11 spacewalk. A plaque would accompany it, explaining that the flag was meant to stand for peaceful exploration, not conquest.
Image: The plaque reads “Here men from the planet Earth first set foot upon the Moon July 1969 A.D. We came in peace for all of mankind.” Under the text are signatures by President Nixon, Buzz Aldrin, Neil Armstrong, and Michael Collins.
A team of engineers at Johnson Space Center had three months to resolve several issues regarding the flag’s assembly. First, was the Moon’s lack of atmosphere. The flag, quite literally, could not fly the way it does on Earth. To address this, a horizontal crossbar was added to support the flag’s weight and give the illusion of it waving.
Image: NASA technician David L. McCraw shows the flag next to a Lunar Module mockup.
Second was the flag’s assembly, which had to be as lightweight and compact as possible so as not to take up limited storage space. The completed package, which was attached to Lunar Module’s ladder, weighed just under ten pounds. It received an outer case made of steel, aluminum, and Thermoflex insulation and blanketing to shield the flag from the 2,000 degree Fahrenheit spike from the Eagle’s descent engine.
Image: Component pieces of the flag assembly.
The last issue was mobility. Bulky spacesuits significantly restricted the astronauts’ range of motion, and suit pressurization limited how much force they could apply. To accommodate these limits, the team included telescoping components to minimize the need to reach and maneuver the poles. A red painted ring on the flagpole indicated how far into the ground it should be driven. Hinges and catches would lock into place once the pieces were fully extended.
Image: Diagram from the 1969 Apollo 11 press release illustrating astronaut spacesuit reach capabilities and ideal working height.
Fifty years after Apollo 11, the flag we planted on the lunar surface has likely faded but its presence looms large in United States history as a symbol of American progress and innovation.
Image: A close-up view of the U.S. flag deployed on the Moon at the Taurus-by the crew of Apollo 17, the most recent lunar landing mission.
Much of the Midwest USA (which is landlocked, with no major natural bodies of water except our rivers) is UNDERWATER and most of the food grown in the US won’t be grown this year. High water rescues are being performed in what is supposed to be prairie. Flooding shows no sign of stopping and is going to break the all time flooding record. Levees are topped and failing, retention pools are full, and on top of that, MAJOR tornadoes (over 750 so far, on 4 occasions reaching EF4 status) have been happening. Over 400 streets are closed in Missouri alone, and most of a major interstate (i29) is closed in Iowa, Missouri, and Nebraska?
Above: Nebraska, where 90% of corn and soy is grown in the US. Left is normal, right is this past march.
Most farmers in these areas don’t have flood insurance because they’re not in flood planes and normally would never need it. So they are at a major loss.
There will not be corn, soy, dry beans, canned beans, beef, chicken, or wheat grown. Beef will go up at least 2$ a lb and corn and soy will be extremely pricey and hard to find because it will have to be imported.
Lots of farmers haven’t even been able to plant their fields and cannot plant at all, most commonly as a result of too much moisture in the soil—though driving through my part of Illinois, I can tell you that many fields are more puddle/lake than actual field.
Most of this area with lots of rain has already hit their “final planting date,” when crop insurance no longer guarantees the full payout as crops planted after that date stand a significantly higher risk of not making it to harvest. As a result, many farmers are looking at having to take prevented planting payments, which are generally 50-60% of their normal revenue. Additionally, taking these payments prevents those farmers from being able to replant their crop. While some haven’t paid for inputs (fuel, seed, fertilizer), many already have, and it will be extremely difficult to cover these losses with such a low payment.
It’s going to be a massive hit to small and medium-sized farms, which constitute over 90% of farms in the United States.
Livestock is also dying at an alarming rate - one person I know has recently lost 200 cattle because of flooding.
More levees have breeched in this and the flooding is worse than Katrina. More rain is still coming. Fields that should be planted right now are sitting under feet of standing water, which is also a breeding ground for mosquitoes and other disease-carrying insects.
Right now, we are leaning on a back supply of food, but this can only last for so long.
If you live somewhere that is affected by this, and you very well might, even if you don’t know it, STOCK UP ON FOOD. Corn, soy, wheat, beef, and dry beans are the biggest things that will be affected. Chicken might be good to stock up on too. Prices will skyrocket when back supply begins to run low. This is a very real thing. Nuts, potatoes, and pea-based proteins shouldn’t be affected.
Other photos:
Credit for help with this post goes to “sounds like a weirdly specific question but okay” on facebook.
6/4/19
This isn’t a spring post. This is full summer. God help us.
Illinois is like 45% planted. It’s astounding and scary.
Missouri is under so much water. Places that have never flooded before are being evacuated. No one is really prepared for this.
Earth: It’s our oasis in space, the one place we know that harbors life. That makes it a weird place – so far, we haven’t found life anywhere else in the solar system…or beyond. We study our home planet and its delicate balance of water, atmosphere and comfortable temperatures from space, the air, the ocean and the ground.
To celebrate our home, we want to see what you love about our planet. Share a picture, or several, of Earth with #PictureEarth on social media. In return, we’ll share some of our best views of our home, like this one taken from a million miles away by the Earth Polychromatic Imaging Camera (yes, it’s EPIC).
From a DC-8 research plane flying just 1500 feet above Antarctic sea ice, we saw a massive iceberg newly calved off Pine Island Glacier. This is one in a series of large icebergs Pine Island has lost in the last few years – the glacier is one of the fastest melting in Antarctica.
It’s not just planes. We also saw the giant iceberg, known as B-46, from space. Landsat 8 tracked B-46’s progress after it broke off from Pine Island Glacier and began the journey northward, where it began to break apart and melt into the ocean.
Speaking of change, we’ve been launching Earth-observing satellites since 1958. In that time, we’ve seen some major changes. Cutting through soft, sandy soil on its journey to the Bay of Bengal, the Padma River in Bangladesh dances across the landscape in this time-lapse of 30 years’ worth of Landsat images.
Our space-based view of Earth helps us track other natural activities, too. With both a daytime and nighttime view, the Aqua satellite and the Suomi NPP satellite helped us see where wildfires were burning in California, while also tracking burn scars and smoke plumes..
Astronauts have an out-of-this-world view of Earth, literally. A camera mounted on the International Space Station captured this image of Hurricane Florence after it intensified to Category 4.
It’s not just missions studying Earth that capture views of our home planet. Parker Solar Probe turned back and looked at our home planet while en route to the Sun. Earth is the bright, round object.
Want to learn more about our home planet? Check out our third episode of NASA Science Live where we talked about Earth and what makes it so weird.
Today we roll out a new communications project that highlights some of the many ways that NASA’s Earth observations help people strengthen communities across the United States.
Space for U.S. features stories on how Earth science data is used to make informed decisions about public health, disaster response and recovery and environmental protection. By highlighting advanced technology from a global perspective, our data helps provide people achieve groundbreaking insights.
For example, a family-owned coffee company in Maine used our sunlight, wind and temperature data to determine the placement of their power-generating solar wall.
For six decades, we’ve used the vantage point of space to better understand our home planet and improve lives. Using Space for U.S., you can browse through stories about how applied Earth science either by state or by topics such as animals, disasters, energy, health, land and water. Each click brings you a story about how people are putting NASA data to work.
Explore the true stories behind the innovative technology, groundbreaking insights, and extraordinary collaboration happening right here in the United States with Space for U.S.
There are some things only humans can do in space. The rest can be left to robots. To free up valuable time for astronauts living and working aboard the International Space Station, we’re sending three robotic helpers to the orbiting outpost. Developed and built at our Ames Research Center in California’s Silicon Valley, the cube-shaped Astrobee robots will each stay as busy as a bee flying around the space station and assisting crew with routine tasks like maintenance and tracking inventory. The robots will also help researchers on the ground carry out experiments, test new technologies and study human-robot interaction in space. Learning how robots can best work with humans in close proximity will be key for exploring the Moon and other destinations. Get to know more about our new robots headed to space:
The Astrobee robots were tested inside a special lab at our Ames Research Center where researchers created a mockup of the space station’s interior.
The flying robots are propelled by fans. They can move in any direction and turn on any axis in space.
Each robot is equipped with cameras and sensors for navigating inside the space station and avoiding obstacles.
Claw power! Astrobees have a robotic arm that can be attached for handling cargo or running experiments.
Astrobee is battery powered. When its battery runs low, the robot will autonomously navigate and dock to a power station to recharge.
The robots can operate in either fully automated mode or under remote control by astronauts or researchers on Earth.
Astrobee builds on the success of SPHERES, our first-generation robotic assistant that arrived at the space station in 2006.
Two of the three Astrobee robots are scheduled to launch to space this month from our Wallops Flight Facility in Virginia! Tune in to the launch at www.nasa.gov/live.
There are some things only humans can do in space. The rest can be left to robots. To free up valuable time for astronauts living and working aboard the International Space Station, we’re sending three robotic helpers to the orbiting outpost. Developed and built at our Ames Research Center in California’s Silicon Valley, the cube-shaped Astrobee robots will each stay as busy as a bee flying around the space station and assisting crew with routine tasks like maintenance and tracking inventory. The robots will also help researchers on the ground carry out experiments, test new technologies and study human-robot interaction in space. Learning how robots can best work with humans in close proximity will be key for exploring the Moon and other destinations. Get to know more about our new robots headed to space:
The Astrobee robots were tested inside a special lab at our Ames Research Center where researchers created a mockup of the space station’s interior.
The flying robots are propelled by fans. They can move in any direction and turn on any axis in space.
Each robot is equipped with cameras and sensors for navigating inside the space station and avoiding obstacles.
Claw power! Astrobees have a robotic arm that can be attached for handling cargo or running experiments.
Astrobee is battery powered. When its battery runs low, the robot will autonomously navigate and dock to a power station to recharge.
The robots can operate in either fully automated mode or under remote control by astronauts or researchers on Earth.
Astrobee builds on the success of SPHERES, our first-generation robotic assistant that arrived at the space station in 2006.
Two of the three Astrobee robots are scheduled to launch to space this month from our Wallops Flight Facility in Virginia! Tune in to the launch at www.nasa.gov/live.
For Women’s History Month, NASA and the International Space Station celebrate the women who conduct science aboard the orbiting lab. As of March 2019, 63 women have flown in space, including cosmonauts, astronauts, payload specialists, and space station participants. The first woman in space was Russian cosmonaut Valentina Tereshkova who flew on Vostok 6 on June 16, 1963. The first American woman in space, Sally Ride, flew aboard the Space Shuttle STS-7 in June of 1983.
If conducted as planned, the upcoming March 29 spacewalk with Anne McClain and Christina Koch would be the first all-female spacewalk. Women have participated in science on the space station since 2001; here are the most recent and some highlights from their scientific work:
Christina Koch, Expedition 59
Christina Koch(pictured on the right) becomes the most recent woman in space, launching to the space station in mid-March to take part in some 250 research investigations and technology demonstrations. Koch served as station chief of the American Samoa Observatory and has contributed to the development of instruments used to study radiation particles for the Juno mission and the Van Allen Probe.
Anne McClain, Expedition 57/58, 59
Flight Engineer Anne McClain collects samples for Marrow, a long-term investigation into the negative effects of microgravity on the bone marrow and blood cells it produces. The investigation may lead to development of strategies to help prevent these effects in future space explorers, as well as people on Earth who experience prolonged bed rest. McClain holds the rank of Lieutenant Colonel as an Army Aviator, with more than 2,000 flight hours in 20 different aircraft.
Serena M. Auñón-Chancellor, Expedition 56/57
Serena Auñón-Chancellor conducts research operations for the AngieX Cancer Therapy inside the Microgravity Science Glovebox (MSG). This research may facilitate a cost-effective drug testing method and help develop safer and more effective vascular-targeted treatments. As a NASA Flight Surgeon, Auñón-Chancellor spent more than nine months in Russia supporting medical operations for International Space Station crew members.
Peggy Whitson, Expeditions 5, 16, 50, 51/52
Astronaut Peggy Whitson holds numerous spaceflight records, including the U.S. record for cumulative time in space – 665 days – and the longest time for a woman in space during a single mission, 289 days. She has tied the record for the most spacewalks for any U.S. astronaut and holds the record for the most spacewalk time for female space travelers. She also served as the first science officer aboard the space station and the first woman to be station commander on two different missions. During her time on Earth, she also is the only woman to serve as chief of the astronaut office. Here she works on the Genes in Space-3 experiment, which completed the first-ever sample-to-sequence process entirely aboard the International Space Station. This innovation makes it possible to identify microbes in real time without having to send samples back to Earth, a revolutionary step for microbiology and space exploration.
Kate Rubins, Expedition 48/49
The Heart Cells investigation studies the human heart, specifically how heart muscle tissue contracts, grows and changes its gene expression in microgravity and how those changes vary between subjects. In this image, NASA astronaut Kate Rubins conducts experiment operations in the U.S. National Laboratory. Rubins also successfully sequenced DNA in microgravity for the first time as part of the Biomolecule Sequencer experiment.
Samantha Cristoforetti, Expedition 42/43
The first Italian woman in space, European Space Agency (ESA) astronaut Samantha Cristoforetti conducts the SPHERES-Vertigo investigation in the Japanese Experiment Module (JEM). The investigation uses free-flying satellites to demonstrate and test technologies for visual inspection and navigation in a complex environment.
Elena Serova, Expedition 41/42
Cosmonaut Elena Serova, the first Russian woman to visit the space station, works with the bioscience experiment ASEPTIC in the Russian Glavboks (Glovebox). The investigation assessed the reliability and efficiency of methods and equipment for assuring aseptic or sterile conditions for biological investigations performed on the space station.
Karen Nyberg, Expedition 36/37
NASA astronaut Karen Nyberg sets up the Multi-Purpose Small Payload Rack (MSPR) fluorescence microscope in the space station’s Kibo laboratory. The MSPR has two workspaces and a table used for a wide variety of microgravity science investigations and educational activities.
Sunita Williams, Expeditions 32/33, 14/15
This spacewalk by NASA astronaut Sunita Williams and Japan Aerospace Exploration Agency (JAXA) astronaut Aki Hoshide, reflected in Williams’ helmet visor, lasted six hours and 28 minutes. They completed installation of a main bus switching unit (MBSU) and installed a camera on the International Space Station’s robotic Canadarm2. Williams participated in seven spacewalks and was the second woman ever to be commander of the space station. She also is the only person ever to have run a marathon while in space. She flew in both the space shuttle and Soyuz, and her next assignment is to fly a new spacecraft: the Boeing CST-100 Starliner during its first operational mission for NASA’s Commercial Crew Program.
Cady Coleman, Expeditions 26/27
Working on the Capillary Flow Experiment (CFE), NASA astronaut Catherine (Cady) Coleman performs a Corner Flow 2 (ICF-2) test. CFE observes the flow of fluid in microgravity, in particular capillary or wicking behavior. As a participant in physiological and equipment studies for the Armstrong Aeromedical Laboratory, she set several endurance and tolerance records. Coleman logged more than 4,330 total hours in space aboard the Space Shuttle Columbia and the space station.
Tracy Caldwell Dyson, Expedition 24
A system to purify water for use in intravenous administration of saline would make it possible to better treat ill or injured crew members on future long-duration space missions. The IVGEN investigation demonstrates hardware to provide that capability. Tracy Caldwell Dyson sets up the experiment hardware in the station’s Microgravity Science Glovebox (MSG). As noted above, she and Shannon Walker were part of the first space station crew with more than one woman.
Shannon Walker, Expedition 24/25
Astronaut Shannon Walker flew on Expedition 24/25, a long-duration mission that lasted 163 days. Here she works at the Cell Biology Experiment Facility (CBEF), an incubator with an artificial gravity generator used in various life science experiments, such as cultivating cells and plants on the space station. She began working in the space station program in the area of robotics integration, worked on avionics integration and on-orbit integrated problem-solving for the space station in Russia, and served as deputy and then acting manager of the On-Orbit Engineering Office at NASA prior to selection as an astronaut candidate.
Stephanie Wilson, STS-120, STS-121, STS-131
Astronaut Stephanie Wilson unpacks a Microgravity Experiment Research Locker Incubator II (MERLIN) in the Japanese Experiment Module (JEM). Part of the Cold Stowage Fleet of hardware, MERLIN provides a thermally controlled environment for scientific experiments and cold stowage for transporting samples to and from the space station. Currently serving as branch chief for crew mission support in the Astronaut Office, Wilson logged more than 42 days in space on three missions on the space shuttle, part of the Space Transportation System (STS).
Other notable firsts:
• Roscosmos cosmonaut Svetlana Savitskaya, the first woman to participate in an extra-vehicular activity (EVA), or spacewalk, on July 25, 1984
• NASA astronaut Susan Helms, the first female crew member aboard the space station, a member of Expedition 2 from March to August 2001
• NASA astronaut Peggy Whitson, the first female ISS Commander, April 2008, during a six-month tour of duty on Expedition 16
• Susan Helms shares the record for longest single spacewalk, totaling 8 hours 56 minutes with fellow NASA astronaut Jim Voss.
• Expedition 24 marked the first with two women, NASA astronauts Shannon Walker and Tracy Caldwell Dyson, assigned to a space station mission from April to September, 2010
• NASA astronaut Anne McClain became the first woman to live aboard the space station as part of two different crews with other women: Serena Auñón-Chancellor in December 2018 and currently in orbit with Christina Koch.
