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'Modest, humble, and uncommonly smart': How a Soviet mathematician quietly solved the mystery of planet formation
By Dan Levitt published
"For years, he had the field of planetary formation, which he had created, virtually to himself. Most Soviet colleagues were skeptical and uninterested; his research appeared so speculative, so far removed from any evidence."

No aliens in NASA's debut UFO report — but big questions remain
By Brett Tingley published
In the agency's first public report on unidentified anomalous phenomena (UAP), NASA experts admit "we don't know what these UAP are."

Asteroid that collided with NASA spacecraft is behaving unexpectedly, high school class discovers
By Brandon Specktor published
Asteroid Dimorphos, which NASA intentionally hit with a rocket during its DART mission in September 2022, is behaving in unpredicted ways.

NASA is hunting for life outside the solar system. Here's how.
By Robert Lea published
"We aren’t going to see little green men but rather spectral signatures of these key chemicals, or what we call biosignatures."

NASA may have unknowingly found and killed alien life on Mars 50 years ago, scientist claims
By Harry Baker published
One researcher hypothesizes that experiments carried out by NASA's Viking landers in 1976 could have inadvertently killed microbes living in Martian rocks. Other experts are skeptical.

Russia's Luna 25 lunar lander left a 33-foot-wide crater when it crashed into the moon, NASA images reveal
By Kiley Price published
Russia's failed lunar probe mission likely created a crater on the southeastern region of the moon.

What is OSIRIS-REx? Everything you need to know about the 1st NASA spacecraft to land on an asteroid
By Ben Turner published
OSIRIS-REx is due to make its return to Earth on Sept. 24. Here's everything you need to know about the mission and what it may reveal about the beginning — and the potential end — of life on Earth.

Space photo of the week: Ring Nebula glistens like a jelly-filled doughnut in Webb telescope's latest images
By Jamie Carter published
The archetypal planetary nebula imaged by the James Webb Space Telescope now comes in two colorful versions, each showing spectacular features.
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