Cygnus Cargo Droid Departs The ISS

The Cygnus space freighter from Northrop Grumman is pictured after being released from the Canadarm2 robotic arm completing a four-month cargo mission at the International Space Station.

Astronomers have discovered the smallest and most massive white dwarf ever seen.

Inside the Space Life Sciences Laboratory at NASA's Kennedy Space Center in Florida, bobtail squid are part of preparations on May 20, 2021, for the Understanding of Microgravity on Animal-Microbe Interactions (UMAMI) experiment launched to the International Space Station aboard SpaceX's 22nd Commercial Resupply Services mission.

Our universe is expanding, but our two main ways to measure how fast this expansion is happening have resulted in different answers.

The uncrewed Russian Progress 78 is safely in orbit headed for the International Space Station following launch at 7:27 p.m. (4:27 a.m. Wednesday, June 30, Baikonur time) from the Baikonur Cosmodrome in Kazakhstan.

Thomas Pesquet: A sandstorm! I have seen a few times sand deposited on cars in the streets of metropolitan France, the result of such a weather event, and I knew as a pilot flying to Africa that it could be bad sometimes, but I had never seen one from space!

The search for extraterrestrial intelligence (SETI) has been conducted for nearly 60 years.

Allabogdanite was first reported in the early 2000s from the Onello - a small iron meteorite recovered from the gold placer at the Bolshoi Dolguchan River in Eastern Yakutia.

A long time ago, in two galaxies about 900 million light-years away, two black holes each gobbled up their neutron star companions, triggering gravitational waves that finally hit Earth in January 2020.

The Cygnus resupply ship will complete its cargo mission to the International Space Station on Tuesday.

Thomas Pesquet: I love the light in this picture: green LED's light up the US lab module, warmer evening lights in Node-2, and the light reflected on Earth by the Sun projects on the ceiling. Not sure what Shane was taking a picture of, but it was in daylight!

Some exoplanet searches could be missing nearly half of the Earth-sized planets around other stars.

An earlier discovery of liquid water lakes beneath Mars' south pole may not be as wet as believed, a new paper says.

While studying two exoplanets in a bright nearby star system, the CHEOPS satellite has unexpectedly spotted the system's third known planet crossing the face of the star.

An international team of astronomers has observed the first example of a new type of supernova.

NASA astronaut Shane Kimbrough and ESA (European Space Agency) astronaut Thomas Pesquet concluded their spacewalk at 2:37 p.m. EDT, after 6 hours and 45 minutes.

Thomas Pesquet: I have trouble fitting Madagascar into the frame! The island is almost a continent, with incredible colours. 🇲🇬

A cataclysmic cosmic collision takes center stage in this image taken with the NASA/ESA Hubble Space Telescope.

Scientists from the University of Michigan have developed an innovative way to use NASA satellite data to track the movement of tiny pieces of plastic in the ocean.

A giant comet from the outskirts of our Solar System has been discovered in 6 years of data from the Dark Energy Survey.

On June 1, NASA's Perseverance Mars rover kicked off the science phase of its mission by leaving the "Octavia E. Butler" landing site.

Spacewalking astronauts work outside the space station, NASA's new deputy administrator is sworn-in, and putting another piece of our Artemis I Moon rocket in place... a few of the stories to tell you about - This Week at NASA.

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

The Copernicus Sentinel-1 mission takes us over Lake Mar Chiquita - an endorheic salt lake in the northeast province of Córdoba, Argentina.

Four Expedition 65 crew members spent Thursday preparing for the third spacewalk to continue new roll-out solar array installation work.

On Wednesday I listened to Administrator Bill Nelson testify before a Congressional Committee. During the course of the hearing every single member chimed in about the importance of NASA to their state (and vice versa) and twisted Nelson's arm for a site visit.

A new paper finds more radar signals suggesting the presence of subsurface 'lakes,' but many are in areas too cold for water to remain liquid.

Early in the pandemic, it was expected that satellite imagery around the world would show cleaner air as a result of COVID-19 lockdowns.

Dmitry Blinov notes that researchers have been studying the optical polarisation from active galactic nuclei for more than 50 years.

Wednesday was a light duty day for the five Expedition 65 astronauts, two of whom will go on their third spacewalk this month.

To protect astronauts from cancer-causing radiation in space, NASA should proceed with proposals to set a universal career-long radiation dose limit of ~600 millisieverts (mSv), says a new report from the National Academies of Sciences, Engineering, and Medicine.

Thomas Pesquet: See how close France and the United Kingdom are to each other. Despite all that has changed, the geographical location is the same as when I first flew to space on the Proxima mission in 2017.

Using data for more than 500 young stars observed with the Atacama Large Millimeter/Submillimeter Array (ALMA), scientists have uncovered a direct link between protoplanetary disk structures--the planet-forming disks that surround stars--and planet demographics.

University of Maryland researchers created the first high-resolution image of an expanding bubble of hot plasma and ionized gas where stars are born.

Thomas Pesquet: Mark's pipetting skills are through the roof! Well not literally.

The Expedition 65 crew continued its space research activities today while two astronauts prepared for their third spacewalk in less than two weeks.

The International Space Station has a new solar array that was installed during Sunday's spacewalk by Expedition 65 astronauts Shane Kimbrough and Thomas Pesquet. The duo will conduct a third spacewalk on Friday to install a second solar array.

Thomas Pesquet: Les dunes du Sahara.

Thomas Pesquet: While we were spacewalking on Wednesday the population of humans in space grew by 43%. We are seven on the International Space Station, and China launched three astronauts into space: Nie Haisheng, Liu Boming and Tang Hongbo. 👏 Welcome!:)

Teams with NASA's Exploration Ground Systems and contractor Jacobs prepare to integrate the launch vehicle stage adapter (LVSA) for NASA's Space Launch System (SLS) rocket with the massive SLS core stage.

A new analysis of Venus' surface shows evidence of tectonic motion in the form of crustal blocks that have jostled against each other like broken chunks of pack ice.

Spacewalkers (from left) Shane Kimbrough and Thomas Pesquet work to install new roll out solar arrays on the International Space Station's P-6 truss structure.

The Space Launch System (SLS) rocket's interim cryogenic propulsion stage (ICPS) sits in the transfer aisle of the Vehicle Assembly Building (VAB).

A research team led by the University of Arizona has reconstructed in unprecedented detail the history of a dust grain that formed during the birth of the solar system more than 4.5 billion years ago.

Today - Payloads: JAXA Moderate Temperature Protein Crystallization Growth (Moderate Temp PCG):

SpaceCast Weekly is a NASA Television broadcast from the Johnson Space Center in Houston featuring stories about NASA's work in human spaceflight.

I just finished reading Astronaut Ron Garan's second book "Floating in Darkness: A Journey Of Evolution". Contrary to the word "darkness" in the title, this book brings so much to light.

A team of scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the young star Elias 2-27 have confirmed that gravitational instabilities play a key role in planet formation

When astronomers using NASA's Hubble Space Telescope uncovered an oddball galaxy that looked like it didn't have much dark matter, some thought the finding was hard to believe and looked for a simpler explanation.

This image shows the spiral galaxy NGC 3254, observed using Hubble's Wide Field Camera 3 (WFC3). WFC3 has the capacity to observe ultraviolet, visible, and near-infrared light.

Installing new solar arrays for the space station, updating launch and landing dates for Commercial Crew, and NASA's new deputy administrator is confirmed... a few of the stories to tell you about - This Week at NASA.

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

The Tana River, Kenya's longest river, is featured in this false-colour image captured by the Copernicus Sentinel-2 mission.

The Expedition 65 crew is checking spacesuits and tools following Wednesday's spacewalk while also getting ready for a second spacewalk on Sunday.

NASA astronaut Shane Kimbrough and ESA (European Space Agency) astronaut Thomas Pesquet concluded their spacewalk at 3:26 p.m. EDT, after 7 hours and 15 minutes.

Thomas Pesquet: These two pictures show random clouds, and they are nothing particularly exceptional for a view up here, but they have nice colours.

The island of Cyprus in the eastern Mediterranean Sea is pictured from the International Space Station as it orbited 263 above Aleppo, Syria.

When Betelgeuse, a bright orange star in the constellation of Orion, became visibly darker in late 2019 and early 2020, the astronomy community was puzzled.

Researchers using the Atacama Large Millimeter/submillimeter Array (ALMA) discovered a titanic galactic wind driven by a supermassive black hole 13.1 billion years ago.

NASA astronaut Shane Kimbrough and ESA (European Space Agency) astronaut Thomas Pesquet are scheduled to exit the International Space Station's Quest airlock Wednesday for a spacewalk to install and deploy the first of six new solar arrays to help power the orbiting laboratory.

Thomas Pesquet: This is IROSA, the rolled-up solar array that we'll go out and install and deploy tomorrow.

Thomas Pesquet: An early morning pass over USA. The most vivid and contrasted colours are obtained in the middle of the day, but I like the shadows and pastel tones of the early morning. Beauty is in the eye of the beholder!

The spin of the Milky Way's galactic bar, which is made up of billions of clustered stars, has slowed by about a quarter since its formation, according to a new study by researchers at University College London (UCL) and the University of Oxford.

Research combining systematic observations with cosmological simulations has found that, surprisingly, black holes can help certain galaxies form new stars.

The Calorimetric Electron Telescope (CALET), in operation on the International Space Station since 2015, collected a large sample of cosmic-ray iron over a wide energy interval.

The Expedition 65 astronauts researched space biology while preparing for a pair of spacewalks aboard the International Space Station today.

Provincetown on the northern tip of Cape Cod in Massachusetts is pictured from the International Space Station as it orbited 262 miles above the Atantic Ocean.

The core stage of the Space Launch System (SLS) rocket for NASA's Artemis I mission has been placed on the mobile launcher in between the twin solid rocket boosters inside the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center.

Astronomers have spotted a giant 'blinking' star towards the centre of the Milky Way, more than 25,000 light years away.

Four planets locked in a perfect rhythm around a nearby star are destined to be pinballed around their solar system when their sun eventually dies, according to a study led by the University of Warwick that peers into its future.

The surface of the sun churns with energy and frequently ejects masses of highly-magnetized plasma towards Earth. Sometimes these ejections are strong enough to crash through the magnetosphere -- the natural magnetic shield that protects the Earth -- damaging satellites or electrical grids. Such space weather events can be catastrophic.

Cotton plants and kidney cells were the dominant research topics aboard the International Space Station today. NASA TV will also broadcast a preview on Monday of two upcoming Expedition 65 spacewalks.

SpaceCast Weekly is a NASA Television broadcast from the Johnson Space Center in Houston featuring stories about NASA's work in human spaceflight.

Making progress on our Artemis Moon rocket, images from a close encounter with a Jovian moon, and a ring of fire for our Moon... a few of the stories to tell you about - This Week at NASA.

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