April 2022

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

Two Roscosmos cosmonauts went on a spacewalk to activate the new European robotic arm (ERA) less than a day after the SpaceX Crew-4 mission arrived at the International Space Station

Mount Aso, the largest active volcano in Japan, is featured in this image captured on 1 January 2022 by the Copernicus Sentinel-2 mission.

Russian cosmonauts Oleg Artemyev and Denis Matveev of Roscosmos concluded their spacewalk outside of the International Space Station at  6:40 p.m. EDT after 7 hours and 42 minutes.

After full review, the observatory has been confirmed to be capable of capturing crisp, well-focused images with each of its four powerful onboard science instruments.

Scientists have been studying the sediments within Mars' Gale crater for many years using orbital data sets, but thanks to the Curiosity rover driving across these deposits we can also obtain up-close observations and detailed measurements of the rocks, similar to field work done by geologists on Earth.

NASA and its partners at the German Space Agency at the Deutsches Zentrum für Luft- und Raumfahrt (DLR) will conclude the Stratospheric Observatory for Infrared Astronomy (SOFIA) mission, after a successful eight years of science.

NASA's Juno spacecraft captured this view of Jupiter during the mission's 40th close pass by the giant planet on Feb. 25, 2022.

Is it the skin of a leopard or seasonal fans on Mars?

In just minutes, a flare on the Sun can release enough energy to power the whole world for 20,000 years.

NASA astronauts Mission Commander Kjell Lindgren, Pilot Bob Hines, and Mission Specialist Jessica Watkins, and Mission Specialist Samantha Cristoforetti of ESA (European Space Agency) now are aboard the International Space Station following Crew Dragon's hatch opening about 9:15 p.m. EDT, Wednesday, April 27.

Eyeing some of the components that enabled the rover to get safely to the Martian surface could provide valuable insights for future missions.

The Emirates Mars Mission, the first interplanetary exploration undertaken by an Arab nation, today released stunning images of Mars' enigmatic discrete auroras, following a series of revolutionary observations that promise new answers - and new questions - about the interactions between Mars' atmosphere, the planet's magnetic fields and the solar wind.

Albedo is a term that represents the ability of Earth's surface to reflect solar radiation. This is the primary factor of the energy balance between the surface and the atmosphere.

The high efficiency, light weight and flexibility of the latest solar cell technology means photovoltaics could provide all the power needed for an extended mission to Mars, or even a permanent settlement there, according to a new analysis by scientists at the University of California, Berkeley.

A sample site is denoted for the SQuARE archaeological investigation with pieces of Kapton tape. This investigation studies how astronauts use objects in space over an extended period of time in space.

NASA's SpaceX Crew-4 astronauts are in orbit following their launch to the International Space Station at 3:52 a.m. EDT Wednesday, April 27, from Launch Complex 39A at NASA's Kennedy Space Center in Florida.

Now that Axiom Mission 1 (Ax-1) crew is safely back on Earth it's time for the SpaceX Crew-4 mission to depart to the International Space Station.

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen at sunrise on the launch pad at Launch Complex 39A as preparations continue for the Crew-4 mission, Tuesday, April 26, 2022, at NASA's Kennedy Space Center in Florida.

In the province of Quebec, northern Canada, the Pingualuit Crater is known as the "Crystal Eye" to the Inuit.

Glaciers of carbon dioxide are moving, creating deposits kilometers thick today across the south polar region of Mars, something that could have been going on more than 600,000 years, a paper by Planetary Science Institute Research Scientist Isaac Smith says.

Launcher integration for the inaugural flight of Vega-C began with the P120C solid-fuel first stage being delivered to the Vega Launch Zone (Zone de Lancement Vega, or ZLV) at Europe's Spaceport in Kourou, French Guiana on 15 April 2022.

Determining the history of Mars, how it formed and evolved over time, has been a goal of both orbiter and rover missions to the Red Planet for decades.

A problem of determining attainable landing sites on the surface of Venus is an essential part of the Venera-D project aimed to explore the planet using a lander.

The Expedition 67 crew is gearing up for the arrival of the SpaceX Crew-4 mission following Sunday's departure of the Axiom Mission 1 (Ax-1) crew.

Axiom Space astronauts Michael López-Alegría, Larry Connor, Eytan Stibbe, and Mark Pathy have safely returned to Earth, marking the end of the Axiom Mission 1 (Ax-1) - the first private astronaut mission to the International Space Station.

Archival observations of 25 hot Jupiters by the NASA/ESA Hubble Space Telescope have been analysed by an international team of astronomers, enabling them to answer five open questions important to our understanding of exoplanet atmospheres.

Parallel ice ridges, a common feature on Jupiter's moon Europa, are found on Greenland's ice sheet - and could bode well for Europa's potential habitability.

The seismometer placed on Mars by NASA's InSight lander has recorded its two largest seismic events to date: a magnitude 4.2 and a magnitude 4.1 marsquake.

Saturn's moon Titan looks very much like Earth from space, with rivers, lakes, and seas filled by rain tumbling through a thick atmosphere.

Scientists have long understood that plate tectonics, the drift of separate, rigid plates that make up the Earth's crust, formed continents and mountains and was crucial to the evolution of the planet's surface from one of molten lava and rock to an environment hospitable to life.

The past two years have seen a global health crisis unravel at a rapid speed, disrupting economies, societies and political processes worldwide.

The International Space Station's Canadarm2 robotic arm (at left) and one of its main solar arrays (at right) are pictured while the spacecraft orbited into a sunrise 257 miles above the Pacific Ocean.

Lake Erepecu and Rio Trombetas in Brazil are featured in this sun glint image photographed by an Expedition 20 crew member on the International Space Station.

NGC 4258 is a spiral galaxy about 25 million light years from Earth, also known as M106.

Fifty years ago, April 20, 1972, Apollo 16's lunar module Orion touched down on the Moon's near side in the south-central Descartes Highlands.

The shell bound by the Karman line at a height of 80 to 100km above the Earth's surface, and Geosynchronous Orbit, at 36,000km, is defined as the orbital space surrounding the Earth.

This observation shows striated highlands that are probably the result of what is termed "mass wasting" when material higher up collapses and flows downslope.

NASA completed manufacturing of a hydrogen tank barrel that will be tested as a weld confidence article for the Space Launch System (SLS) rocket's Exploration Upper Stage (EUS).

NASA's SpaceX Crew-4 astronauts prepare for launch, an update on our Artemis I mega Moon rocket and spacecraft, and celebrating our home planet for #EarthDay - just 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.

NASA and SpaceX now are targeting no earlier than 3:52 a.m. EDT Wednesday, April 27, for launch of the agency's SpaceX Crew-4 mission to the International Space Station from Launch Complex 39A at NASA's Kennedy Space Center in Florida.

The Ax-1 crew's visit to the International Space Station (ISS) has been extended due to unfavorable weather, this brings their total time currently spent in space to 14 days.

This spectacular image of Earth was captured by the Meteosat Second Generation series of missions on 23 March 2022.

This false color, low tide image of a managed Nature Reserve located in Sindh, near Makran Coastal Highway #Pakistan was taken by Copernicus Sentinel on 1 April 2022.

NASA's InSight Mars lander acquired this image using its robotic arm-mounted, Instrument Deployment Camera (IDC).

The four private astronauts from Axiom Space are now due to depart the International Space Station on Saturday night and return to Earth the next day.

A handful of ancient zircon crystals found in South Africa hold the oldest evidence of subduction, a key element of plate tectonics, according to a new study published today in AGU Advances, AGU's journal for high-impact, open-access research and commentary across the Earth and space sciences.

Imagine a mountaineering expedition in a wholly uncharted environment, where the hikers had the ability to generate a real-time 3D map of the terrain.

The four private astronauts from Axiom Space are now due to depart the International Space Station on Saturday night and return to Earth the next day.

The Sun emitted two solar flares on April 19, 2022, one moderate peaking at 9:35 p.m. EST and one strong peaking at 11:57 p.m. EST.

The integrated NASA, Axiom Space, and SpaceX teams have agreed on a plan for the Axiom Mission 1 (Ax-1) crew to undock from the International Space Station at 8:35 p.m. EDT Saturday, April 23, for a splashdown off the coast of Florida about 1:46 p.m. Sunday, April 24.

This observation covers the western edge of a layered mound in Juventae Chasma.

Astronomers have discovered a new kind of stellar explosion that could be commonplace in the universe and may change our understanding of how eruptions in stars occur.

If not for the soupy, fast-moving atmosphere on Venus, Earth's sister planet would likely not rotate.

As the Grand Ethiopian Renaissance Dam (GERD) in Ethiopia nears completion, the giant structure on the main stem of the Blue Nile is expected to bring new electricity, economic activity, and development to Ethiopia.

Ever since they were discovered in 2018, fast blue optical transients (FBOTs) have utterly surprised and completely confounded both observational and theoretical astrophysicists.

Collecting samples as it explores an ancient and now-dry river channel is but one goal the six-wheeled geologist will pursue during its second Red Planet exploration.

NASA is celebrating the Hubble Space Telescope's 32nd birthday with a stunning look at an unusual close-knit collection of five galaxies, called The Hickson Compact Group 40.

Scientists have long wondered how Jupiter's innermost moon, Io, has meandering ridges as grand as any that can be seen in movies like "Dune." Now, a Rutgers research study has provided a new explanation of how dunes can form even on a surface as icy and roiling as Io's.

Commander Tom Marshburn of NASA joined his six Expedition 67 flight engineers and held a farewell ceremony for the four-member Axiom Mission 1 (Ax-1) crew on Tuesday morning.

Ten days down and two more to go until the conclusion of Axiom Mission One (Ax-1), the historic all-private astronaut mission to the International Space Station.

The four-person, multinational Ax-1 crew has barely had any down time since they arrived at the International Space Station (ISS) over a week ago.

NASA's Solar Dynamics Observatory captured this image of a solar flare - as seen in the bright flash in the upper left portion of the image- on April 16, 2022.

The spiral galaxy M91 fills the frame of this Wide Field Camera 3 observation from the NASA/ESA Hubble Space Telescope.

Recurring slope lineae are Martian seasonal features characterized by a low brightness (albedo) during local spring/summer that fade during winter/late summer.

We develop a model for an interstellar communication network that is composed of relay nodes that transmit diffraction-limited beams of photons.

A bright fireball was observed by a network of all-sky cameras across southern Ontario at 11:37pm on Sunday, April 17, 2022.

The Axiom Mission 1 departture has been delayed.

@CopernicusEU - The beauty of Mont-Saint-Michel and its Bay as captured yesterday 16 April by #Copernicus #Sentinel2 🇪🇺🛰️

Images taken during ESA astronaut Matthias Maurer's first spacewalk, EVA 80.

Light on, light off - this is how one could describe the behavior of the nova, which goes by the name RS Ophiuchi (RS Oph).

Two amateur astronomy projects were awarded the 2022 Page Medal on Saturday 16 April at the National Australian Convention of Amateur Astronomers held online.

NASA's Mars Perseverance rover acquired this image using its Left Mastcam-Z camera. Mastcam-Z is a pair of cameras located high on the rover's mast.

Testing our mega Moon rocket and ground systems, preparing the James Webb Space telescope for science, and testing an instrument for future X-59 research ... a few of the stories to tell you about - This Week at NASA.