The four astronauts on NASA’s Artemis 2 mission began their fifth day journeying to the moon on Sunday, after already taking in sights of the lunar surface never before seen
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Snow in the Shadow of the Andes
Earth Observatory Science Earth Observatory Snow in the Shadow of the Andes Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life
Webb's Picture of the Month Features Two Planet-Forming Disks and a Possible Planet
Two images of protoplanetary disks side-by-side. The left image shows a dark horizontal band covering the star, with broad, colorful, conical outflows above and below it, and a narrow jet
A Mercury Rover Could Explore the Planet by Sticking to the Terminator
A Mercury lander mission would create opportunities to sample unique geological features. However, extreme temperature fluctuations on Mercury’s surface pose challenges for exploration on the planetary surface. In a narrow
Improved thresholds and SSA accuracy can reduce most satellite collision risk
WASHINGTON — Improving the accuracy of space situational awareness (SSA) data and using tighter thresholds for potential conjunctions can help retire most of the risk of satellite collisions in low
A New Class of Star: Merger Remnant
In the vastness of the Universe, any new object with interesting properties can spur the search for similar objects, potentially establishing a new class of stars. In a paper published
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L-Glutamic-acid — Wikipedia Understanding the fate of biomolecules under extreme conditions is central to astrobiology and the origin of life. Astronomical impacts uniquely combine high pressure with intense plastic shear
NASA’s Juno spacecraft passed north-to-south (yellow track) over Jupiter’s atmosphere on 17 August 2022, detecting a cluster of radio pulses from lightning (cyan symbols marking instrument pointing for each pulse).
A team of US astronomers has carried out one of the deepest analyses to date of a sample from the asteroid Bennu, revealing new details about how water and organic
The Artemis II astronauts are already the champions of a fresh new era of lunar exploration. Now it’s time to set a new distance record.
NASA On April 4, 2026, NASA astronaut and Artemis II Commander Reid Wiseman peers out of one of the Orion spacecraft’s main cabin windows, looking back at Earth, as the
Early observations from the Vera C. Rubin Observatory have already revealed more than 11,000 previously unknown asteroids, reshaping our view of the solar system and offering a striking preview of
On Christmas Eve 1968, the crew of NASA’s Apollo 8 moon mission captured the “Earthrise” photograph, which is perhaps the most famous image ever taken from space. Soon, the astronauts
This is a model of the inner solar system. The outermost orbit shown is that of Jupiter. The dark blue ring represents known asteroids in the asteroid belt. The light
Observations of Comet 3I/ATLAS by the JANUS camera on ESA’s Juice mission. Juice caught the comet on November 5, 2025, when it was 64 million kilometers (40 million miles) away
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