April 2021

Antofagasta, a port city in northern Chile, is featured in this image captured by the Copernicus Sentinel-2 mission.

NASA and SpaceX have decided to move Crew-1's undocking and splashdown from Friday, April 30, and Saturday, May 1, respectively, following a review of the forecast weather conditions in the splashdown zones off the coast of Florida, which continue to predict wind speeds above the return criteria.

NASA's Ingenuity Mars Helicopter has a new mission. Having proven that powered, controlled flight is possible on the Red Planet, the Ingenuity experiment will soon embark on a new operations demonstration phase, exploring how aerial scouting and other functions could benefit future exploration of Mars and other worlds.

The trash-filled ISS Progress 75 (75P) resupply ship, with the full Moon above the Earth's horizon, is pictured separating from the International Space Station shortly after undocking from the Zvezda service module.

NASA's Space Launch System (SLS) core stage for the Artemis I mission arrived on April 27, 2021, at the agency's Kennedy Space Center in Florida.

NASA's Hubble Space Telescope is giving astronomers a rare look at a Jupiter-sized, still-forming planet that is feeding off material surrounding a young star.

Venus is an enigma. It's the planet next door and yet reveals little about itself.

A suite of scientific balloons is about to lift off from NASA's Columbia Scientific Balloon Facility's field site in Fort Sumner, New Mexico, carrying instruments that will help scientists understand the connection between the Sun and Earth.

A trash-packed Russian cargo craft departed the International Space Station on Tuesday night. Four astronauts are also nearing the end of their mission amidst a variety of human research taking place on the orbiting lab today.

The sun's glint beams off a cloudy Atlantic Ocean 264 miles below as the SpaceX Crew Dragon Endeavour approached the International Space Station.

The interstellar traveler, 2I/Borisov, is the first clearly active extrasolar comet, ever detected in our Solar system.

Like a chameleon of the night sky, the Moon often changes its appearance. It might look larger, brighter or redder, for example, due to its phases, its position in the solar system or smoke in Earth's atmosphere. (It is not made of green cheese, however.)

Studying the violent collisions of black holes and neutron stars may soon provide a new measurement of the Universe's expansion rate, helping to resolve a long-standing dispute, suggests a new simulation study led by researchers at UCL.

The International Space Station has a new commander today as four astronauts prepare for their return to Earth this Saturday.

The SpaceX Crew Dragon Endeavour is pictured during its approach to the International Space Station less than one day after launching from Kennedy Space Center in Florida.

A technology-packed tank top offers a simple, effective way to track astronauts' vital signs and physiological changes during spaceflight, according to research being presented at the American Physiological Society annual meeting during the Experimental Biology (EB) 2021 meeting, held virtually April 27-30.

Imagine trying to pick up a pebble or scrape microbes off a cave wall in a bulky spacesuit with puffy gloves on, under a time constraint because you don't want to run out of oxygen.

Four astronauts aboard the International Space Station are preparing to return to Earth in a few days.

The SpaceX Crew Dragon Endeavour is pictured from a window on the SpaceX Crew Dragon Resilience during its approach to the International Space Station less than one day after launching from Kennedy Space Center in Florida.

When the four-decades-old Voyager 1 and Voyager 2 spacecraft entered interstellar space in 2012 and 2018, respectively, scientists celebrated.

Not all stars shine brightly all the time. Some have a brightness that changes rhythmically due to cyclical phenomena like passing planets or the tug of other stars.

NASA's Ingenuity Mars Helicopter continues to set records, flying faster and farther on Sunday, April 25, 2021 than in any tests it went through on Earth.

Abu Dhabi, the capital of the United Arab Emirates, on the Persian Gulf coast was pictured from the International Space Station as it orbited 263 miles above Oman.

In celebration of the 31st anniversary of the launching of NASA's Hubble Space Telescope, astronomers aimed the renowned observatory at a brilliant "celebrity star," one of the brightest stars seen in our galaxy, surrounded by a glowing halo of gas and dust.

Marine ecosystems are in the midst of a conservation crisis, with coral reefs in particular facing numerous challenges as a result of climate change.

Rain is a common phenomenon on Earth. There is a similar phenomenon on the Sun, called coronal rain. It is related to the coronal heating and magnetic field, and plays a fundamental role in the mass cycle between the hot, tenuous corona and the cool, dense chromosphere.

The next commercial crew mission to the space station, a historic milestone on Mars, and a hearing to confirm NASA's next administrator ... a few of the stories to tell you about - This Week at NASA.

Today - Crew-2 Launch: Today at 4:49 AM CST, the Crew-2 Dragon Endeavor lifted off from Launch Pad 39A at Kennedy Space Center. The Crew will complete a full day's orbit-set before beginning docking preparations.

NASA astronauts Shane Kimbrough and Megan McArthur, along with JAXA (Japan Aerospace Exploration Agency) astronaut Akihiko Hoshide, and ESA (European Space Agency) astronaut Thomas Pesquet aboard the SpaceX Crew Dragon have arrived at the International Space Station.

NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station.

NASA's SpaceX Crew-2 astronauts are in orbit following their early morning launch bound for the International Space Station for the second commercial crew rotation mission aboard the microgravity laboratory.

The Copernicus Sentinel-2 mission takes us over the sediment-stained waters in Laizhou Bay, located on the southern shores of the Bohai Sea, on the east coast of mainland China.

NASA's Ingenuity helicopter successfully completed its second Mars flight on April 22 - the 18th sol, or Martian day, of its experimental flight test window.

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers found a rotating baby galaxy 1/100th the size of the Milky Way at a time when the Universe was only seven percent of its present age.

In the continuing search for dark matter in our universe, scientists believe they have found a unique and powerful detector: exoplanets.

An international team of researchers searched for pieces of a small asteroid tracked in space and then observed to impact Botswana on June 2, 2018.

The seven Expedition 65 crew members will wait an extra day to greet the four SpaceX Crew-2 astronauts after their launch slipped due to high winds.

The growing list of "firsts" for Perseverance, NASA's newest six-wheeled robot on the Martian surface, includes converting some of the Red Planet's thin, carbon dioxide-rich atmosphere into oxygen.

Crewed exploration beyond Earth orbit, such as a Journey to Mars, will require a food system that can keep astronauts healthy for a long duration.

Everything on our planet -- the land, the water, the air, people -- is connected by the various chemical, physical and biological processes that make up what we call the Earth system.

Glacial melting due to global warming is likely the cause of a shift in the movement of the poles that occurred in the 1990s.

Astronomers using data from NASA and ESA (European Space Agency) telescopes have released a new all-sky map of the outermost region of our galaxy.

Science is in full swing aboard the International Space Station today as the Expedition 65 crew studies how microgravity affects the human body.

The sun's glint beams off the Atlantic Ocean as the International Space Station soared 271 miles above the southern coast of Argentina.

The Aral Sea, which has been shrinking since the 1960's due to agricultural activity, stretches from Uzbekistan in the south to Kazakhstan in the north and was pictured from the International Space Station as it orbited 264 miles above.

Generating renewable energy on Mars is technologically challenging. Firstly, because compared to Earth, key energy resources such as solar and wind are weak as a result of very low atmospheric pressure and low solar irradiation.

Astronomers have discovered a pulsar--a dense and rapidly spinning neutron star sending radio waves into the cosmos--using a low-frequency radio telescope in outback Australia.

The next crew to launch to the International Space Station is counting down to liftoff this Thursday from the Kennedy Space Center in Florida.

The Soyuz MS-17 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan.

Monday, NASA's Ingenuity Mars Helicopter became the first aircraft in history to make a powered, controlled flight on another planet.

Pico de Orizaba, Mexico's highest peak, is pictured from the International Space Station as it orbited 262 miles above the Bay of Campeche.

In recent years there has been an exhaustive study of red dwarf stars to find exoplanets in orbit around them.

Extremely precise measurements are possible using atom interferometers that employ the wave character of atoms for this purpose.

Scientists from the Skoltech Space Center (SSC) have developed nanosatellite interaction algorithms for scientific measurements using a tetrahedral orbital formation of CubeSats that exchange data and apply interpolation algorithms to create local maps of physical measurements in real time.

Within just two years, two interstellar objects (ISOs) - Oumuamuas and Borisov - have been discovered. Large quantities of planetesimals form as a by-product of planet formation.

NASA astronaut Kate Rubins and cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov of Roscosmos landed on Earth at 12:55 a.m. EDT Saturday, April 17 in Kazakhstan. The trio departed the International Space Station in their Soyuz MS-17 spacecraft at 9:34 p.m.

NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station.

Three Expedition 64 crew members are preparing to return to Earth today completing a 185-day research mission on the International Space Station.

On 22 April 2021, on Earth Day, Thomas Pesquet is planned to return to the International Space Station for his second mission, Alpha.

NASA astronaut Shannon Walker of Houston will assume command of the International Space Station today from Roscosmos cosmonaut Sergey Ryzhikov.

The Nile Delta, The Sinai Peninsula, and The Mediterranean Sea are pictured in the Middle East from the International Space Station as it orbited 263 miles above Egypt.

On September 9th, 2020, Bay Area residents woke up to darkness. Acrid smoke blocked out the morning sun. The sky, dense with ash, turned a deep orange hue.

A pair of orbiting black holes millions of times the Sun's mass perform a hypnotic pas de deux in a new NASA visualization.

Ten people occupy the International Space Station today but that will change on Friday when three Expedition 64 crew members return to Earth.

The Golden Gate Bridge links San Francisco with the Golden Gate National Recreation Area in northern California.

In April 2019, scientists released the first image of a black hole in the galaxy M87 using the Event Horizon Telescope (EHT). However, that remarkable achievement was just the beginning of the science story to be told.

Although there are telltale signs that a volcano is likely to erupt in the near future - an uptick in seismic activity, changes in gas emissions, and sudden ground deformation, for example - accurately predicting such eruptions is notoriously hard.

To create this colorful image, observations were taken by Hubble's Wide Field Camera 3 instrument using five different filters.

The present document, the Latin American HECAP Physics Briefing Book, is the result of this ambitious bottom-up effort. This report contains the work performed by the Preparatory Group to synthesize the main contributions and discussions for each of the topical working groups.

Three Expedition 64 crew members reviewed departure procedures today as they get ready to leave the International Space Station at the end of the week.

This long exposure photograph was taken during an orbital night period from the International Space Station 271 miles above the Indian Ocean.

The International Space Station was flying 261 miles above the Sahara Desert when this photograph was taken of the Murzuq District in central Libya.

NASA's Nancy Grace Roman Space Telescope will create enormous cosmic panoramas, helping us answer questions about the evolution of our universe.

NASA's InSight lander has detected two strong, clear quakes originating in a location of Mars called Cerberus Fossae - the same place where two strong quakes were seen earlier in the mission.

The three newest International Space Station crew members are getting used to life in space after a near three-and-a-half hour ride to the orbital lab late last week. There will be 10 people in space until Friday night when another three-person crew returns to Earth.