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Solar Eclipse of the Heart

2026-04-08 17:12

The Moon is backlit by the Sun. Earth is reflecting sunlight at the left edge of the Moon, which is slightly brighter than the rest of the disk; this light reveals a small sliver of the Moon's gray surface. The bright spot visible just below the Moon’s bottom right edge is Saturn. Beyond that, the bright spot at the right edge of the image is Mars. The Orion spacecraft is visible in the foreground on the left.
NASA

The Moon, seen here backlit by the Sun during a solar eclipse on April 6, 2026, is photographed by one of the cameras on the Orion spacecraft’s solar array wings. During lunar flyby, the Artemis II astronauts observed a solar eclipse that only they could see due to their unique position.

See more photos from the Artemis II mission.

Image credit: NASA

A Volcanic Medley Near Mammoth Lakes 

2026-04-08 04:01

A string of small, partially snow-covered volcanic craters runs north-south between Mono Lake and Mammoth Mountain. Snowy mountains fill the left side of the image.
Overlapping volcanic complexes shape the eastern Sierra Nevada in this image acquired on March 29, 2026, by the OLI (Operational Land Imager) on Landsat 9.
NASA Earth Observatory/Lauren Dauphin

Take a tour through volcanic history on the edge of the Sierra Nevada near Mammoth Lakes, California. Between the tall granite peaks to the west and the Basin and Range province to the east, overlapping volcanic complexes imprint the landscape with a collection of craters, cones, and calderas. The area, still restless today, draws interest from geologists studying Earth’s processes and from planetary scientists exploring its commonalities with volcanic terrain elsewhere in our solar system.

A string of volcanic features between Mono Lake and Mammoth Mountain is visible along the left side of this Landsat image. Known as the Mono-Inyo Craters, this chain of about three dozen lava domes, lava flows, and tephra rings formed within the past 10,000 years. Explosive eruptions in the area date back even further, but evidence of those older events is no longer apparent at the surface.

Among the most recent activity in this chain, explosive eruptions formed Panum Crater near Mono Lake about 700 years ago. A strombolian eruption deposited a ring of pumice, ash, obsidian fragments, and other material around the vent. After that, a lava dome made of pumice and obsidian built up in the center, creating the concentric-circle pattern visible today.

The Mono Craters, raised features ranging from small and round to larger and amorphous, form a gently arcing line stretching from north to south.
The Mono Craters arc across this image acquired on March 29, 2026, by the OLI (Operational Land Imager) on Landsat 9.
NASA Earth Observatory/Lauren Dauphin

South of the Mono-Inyo Craters, Mammoth Mountain is perhaps best known for its ample skiable terrain, but it has a volcanic side, as well. The mountain is made up of at least 25 overlapping lava domes. Its last magmatic eruptions took place about 57,000 years ago, but steam-driven phreatic eruptions and other unrest have occurred much more recently.

Scientists believe a magma intrusion beneath the mountain in 1989 set off a spate of seismicity and volcanic gas emissions. Venting of carbon dioxide gas has killed trees in the area, and the U.S. Geological Survey continues to monitor the mountain’s CO2 emissions. Researchers have previously worked with NASA airborne remote sensing technology to measure ecosystem responses to elevated volcanic CO2 around Mammoth Mountain. More recent projects have expanded these efforts to other volcanoes and incorporated satellite imagery to detect signs of gas emissions. These methods partly rely on changes observed in vegetation and could aid in earlier warnings of volcanic hazards.

The most dramatic volcanism in the region, however, is far older. A massive eruption 760,000 years ago formed the Long Valley Caldera. This oval-shaped area, measuring 10 by 20 miles (16 by 32 kilometers), is bounded by snowy ridges, with Mammoth Mountain just off its southwest rim. Crowley Lake, a reservoir on the Owens River, drains the area to the southeast.

The caldera was formed during a six-day-long eruption, during which 150 cubic miles (625 cubic kilometers) of material were ejected. (That’s about 20 times the amount that was spewed in the 1912 eruption of Novarupta, the largest on Earth in the 20th century.) As a result, the surface over the magma storage area subsided thousands of feet to create a vast depression. Scientists with NASA’s Goddard Instrument Field Team conducted research in the area in 2023 to better understand how similar massive eruptions on Mars and other planets and moons in our solar system may have altered their environments.

NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Lindsey Doermann.

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Celestial Wonders in Leo

2026-04-08 03:01

3 Min Read

Celestial Wonders in Leo

A spiral galaxy is viewed sideways, with the glowing core closer to the upper left of the image. It is surrounded by spiral arms laced through with dark dust and bright regions of star formation.

Showing a large portion of M66, this Hubble photo is a composite of images obtained at visible and infrared wavelengths. The images have been combined to represent the real colors of the galaxy.

Credits:
NASA, ESA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration; Acknowledgment: Davide De Martin and Robert Gendler

Leo is a prominent sight for stargazers in April. Its famous sickle, punctuated by the bright star Regulus, draws many a beginning stargazer’s eyes, inviting deeper looks into some of Leo’s celestial delights, including a great double star and a famous galactic trio.

A star map featuring the Leo constellation. Several bright stars are visible, such as Regulus and Denebola. A group of galaxies called The Leo Triplet are highlighted.
The constellation, Leo. You can find this constellation in the springtime skies.
Stellarium

Leo’s distinctive forward sickle, or “reverse question mark,” is easy to spot as it climbs the skies in the southeast after sunset. If you are having a difficult time spotting the sickle, look for bright Sirius and Procyon in Canis Major and Canis Minor. Complete a triangle by drawing two lines to the east, joining at the bright star Regulus, the “period” in the reverse question mark. Trailing them is a trio of bright stars forming an isosceles triangle, the brightest star in that formation named Denebola. Connecting these two patterns together forms the constellation of Leo the Lion, with the forward-facing sickle being the lion’s head and mane, and the rear triangle its hindquarters. Can you see this mighty feline? It might help to imagine Leo proudly sitting up and staring straight ahead, like a celestial Sphinx. To help find these objects, you can use online tools like Stellarium Web.

If you peer deeper into Leo with a small telescope or binoculars, you’ll find a notable double star! Look in the sickle of Leo for its second-brightest star, Algieba, also called Gamma Leonis. This star splits into two bright yellow stars even with a small magnification. You can make this “split” with binoculars, but it’s more apparent with a telescope. Compare the color and intensity of these two stars: do you notice any differences? There are other multiple-star systems in Leo; spend a few minutes scanning with your instrument of choice, and see what you discover.

A star map featuring the Leo Triplet - M65, M66 and NGC 3628 - the Hamburger Galaxy. These can be found in the Leo constellation.
The Leo Triplet – three galaxies that appear to be close together under the star Chertan in the Leo constellation.
Stellarium

One of the most famous sights in Leo is the “Leo Triplet”: three galaxies that appear to be close together. They are indeed gravitationally bound to one another, around 30 million light-years away! You’ll need a telescope to spot them, and use an eyepiece with a wide field of view to see all three galaxies at once! Look below the star Chertan to find galaxies M65, M66, and NGC 3628 – The Hamburger Galaxy. Compare and contrast the appearance of each galaxy – while they are all spiral galaxies, each one is tilted at different angles to our point of view! Do they all look like spiral galaxies to you?

April is Citizen Science Month, and there are some fun Leo-related activities you can participate in! If you enjoy
comparing the Triplets, the Galaxy Zoo project could use your eyes to help classify different galaxies from sky survey data! Looking at Leo itself can even help measure light pollution: the Globe at Night project uses Leo as their target constellation for sky quality observations from the Northern Hemisphere. Find and participate in many more NASA community science programs at NASA Citizen Science. Happy observing!

Originally posted by Dave Prosper: April 2021

Last Updated by Kat Troche: April 2026

NASA’s Artemis II Crew Beams Official Moon Flyby Photos to Earth

2026-04-07 20:44

The Moon, backlit by the Sun during a solar eclipse, is photographed by NASA’s Orion spacecraft on April 6, 2026, during the Artemis II mission. Orion is visible in the foreground on the left. Earth is reflecting sunlight at the left edge of the Moon, which is slightly brighter than the rest of the disk. The bright spot visible just below the Moon’s bottom right edge is Saturn. Beyond that, the bright spot at the right edge of the image is Mars.
The Moon, backlit by the Sun during a solar eclipse, is photographed by NASA’s Orion spacecraft on Monday, April 6, 2026, during the Artemis II mission. Orion is visible in the foreground on the left. Earth is reflecting sunlight at the left edge of the Moon, which is slightly brighter than the rest of the disk. The bright spot visible just below the Moon’s bottom right edge is Saturn. Beyond that, the bright spot at the right edge of the image is Mars.
Credit: NASA

The first flyby images of the Moon captured by NASA’s Artemis II astronauts during their historic test flight reveal some regions no human has seen, including a rare in-space solar eclipse. Released Tuesday, astronauts captured the images April 6 during the mission’s seven-hour flyby of the lunar far side, showing humanity’s return to the Moon’s vicinity and opening a trove of scientific data.

NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen, have used a fleet of cameras to take thousands of photos. The agency released several images, with more expected in the coming days as the crew members are more than halfway through their journey and now headed home toward Earth.

“Our four Artemis II astronauts — Reid, Victor, Christina, and Jeremy — took humanity on an incredible journey around the Moon and brought back images so exquisite and brimming with science, they will inspire generations to come,” said Dr. Nicky Fox, associate administrator, Science Mission Directorate, NASA Headquarters in Washington.

During the lunar flyby, the crew documented impact craters, ancient lava flows, and surface fractures that will help scientists study the Moon’s geologic evolution. They monitored color, brightness, and texture differences across the terrain, observed an earthset and earthrise, and captured solar‑eclipse views of the Sun’s corona. The crew also reported six meteoroid impact flashes on the darkened lunar surface.

Scientists already are analyzing the downlinked images, audio, and data to refine the timing and locations of these events and compare them with observations from amateur astronomers. The new imagery also will help NASA better understand the Moon’s geology and inform future exploration and science missions that will lay the foundation for an enduring presence on the Moon ahead of future astronaut missions to Mars.

“It was remarkable listening to the crew describe the stunning views during the flyby,” said Jacob Bleacher, NASA’s chief exploration scientist at the agency’s headquarters. “At first, their descriptions didn’t quite match what we were seeing on our screens. Now that higher resolution images are coming down, we can finally experience the moments they were trying to share and truly appreciate the scientific return provided by these images and our other research on this mission.” 

Official NASA imagery for viewing and download is available on the agency website and digital platforms, including:

Media should follow NASA’s media usage guidelines for all publication and distribution of these images.

NASA is targeting 8:07 p.m. EDT (5:07 p.m. PDT) Friday, April 10, for the return of Artemis II off the coast of San Diego. NASA+ live return coverage begins at 6:30 p.m.  and will continue until NASA and Department of War personnel safely assist the crew out of Orion and transport them to the USS John P. Murtha.

Briefings, events, and 24/7 mission coverage are streaming on NASA’s YouTube channel and events will each have their own stream closer to their start time. Learn how to watch NASA content through a variety of online platforms, including social media.

As part of Golden Age of innovation and exploration, NASA will send Artemis astronauts on increasingly difficult missions to explore more of the Moon for scientific discovery, economic benefits, and to build on our foundation for the first crewed missions to Mars.

To learn more about the Artemis program, visit:

https://www.nasa.gov/artemis

-end-

Cheryl Warner / Katherine Rohloff
Headquarters, Washington
202-358-1100
cheryl.m.warner@nasa.gov / katherine.a.rohloff@nasa.gov

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Last Updated
Apr 07, 2026
Editor
Jessica Taveau
Earthset

2026-04-07 18:54

A muted blue Earth with bright white clouds sets behind the cratered lunar surface. The dark portion of Earth is experiencing nighttime. On Earth’s day side, swirling clouds are visible over the Australia and Oceania region. In the foreground, Ohm crater has terraced edges and a flat floor interrupted by central peaks. Central peaks form in complex craters when the lunar surface, liquefied on impact, splashes upwards during the crater’s formation.
NASA

The Artemis II crew captured this view of Earth setting on April 6, 2026, as they flew around the Moon. As the astronauts flew over the Moon’s far side, the crew photographed and described terrain features including impact craters, ancient lava flows, and surface cracks and ridges formed as the Moon slowly evolved over time. They also noted differences in color, brightness and texture, which provide clues that help scientists understand the composition and history of the lunar surface.

The image is reminiscent of the iconic Earthrise image taken by astronaut Bill Anders 58 years earlier as the Apollo 8 crew flew around the Moon. The Apollo 8 mission was the first crewed spacecraft to circumnavigate the Moon.

For more imagery from the mission, visit our Artemis II Multimedia Page.

Image credit: NASA

TechCrunch - Latest

Tubi is the first streamer to launch a native app within ChatGPT

2026-04-08 18:23

Tubi becomes the first streaming service to offer an app integration within ChatGPT, the AI chatbot that millions of users turn to for answers.
Volkswagen begins testing its self-driving microbuses in Los Angeles ahead of launch with Uber

2026-04-08 17:19

Volkswagen subsidiary MOIA America still has a long and winding regulatory road before it can launch a commercial robotaxi service.
These are the countries moving to ban social media for children

2026-04-08 16:30

Australia was the first country to issue a ban in late 2025, aiming to reduce the pressures and risks that young users may face on social media, including cyberbullying, social media addiction, and exposure to predators.
British cryptographer Adam Back denies NYT report that he is Bitcoin creator Satoshi Nakamoto

2026-04-08 16:03

Back, a long-time researcher and pioneer in cryptography, denies the allegation that he is the secretive creator of Bitcoin.
Astropad’s Workbench reimagines remote desktop for AI agents, not IT support

2026-04-08 16:01

Astropad’s Workbench lets users remotely monitor and control AI agents on Mac Minis from iPhone or iPad, with low-latency streaming and mobile access.
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