In July 2025, astronomers detected 3I/ATLAS, a rare interstellar comet, prompting SETI researchers to scan it for alien ...

Beneath the surface lies an alien ocean packed with bizarre survival strategies, terrifying hunters, and creatures unlike ...

Astronomers turned the Allen Telescope Array toward interstellar comet 3I/ATLAS, formally designated C/2025 N1 (ATLAS), ...

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

The Supreme Court has upheld a broad conception of birthright citizenship, rejecting President Donald Trump’s executive order.

When U.S. health officials meet next month to reconsider a list of controversial peptide drugs, they will hear from a new set ...

I/ATLAS arrived fast, bright, and strange. When astronomers spotted it on July 1, 2025, they knew almost immediately this was no ordinary comet.

Deep within Uranus and Neptune, immense pressure and heat are transforming carbon into diamonds that rain down through the ...

Current and former intelligence officials say the efforts to shrink the office that coordinates the nation’s 18 spy services ...

Harvard Astrophysicist Suggests Mysterious Interstellar Object May Be an Alien Probe Oct. 15, 2025 3I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its ...

The latest Space Exploration breaking news, comment, reviews and features from the experts at Space Exploration Coverage ...

Cosmology news. From deep observations of the far reaches of space and time to spectroscopic analysis and more. Read cosmology articles and consider how astronomers view the origin of the universe.