Possible sign of Mars life? Curiosity rover finds 'tantalizing' Red Planet organics By Mike Wall published 18 January 22 NASA's Curiosity rover has found some interesting organic compounds that may be signs of ancient Mars life, but much more work is needed to vet that hypothesis.
What really makes a planet habitable? Our assumptions may be wrong By Paul Sutter published 18 January 22 How common are ice-covered planets like Hoth from "Star Wars," and might they be capable of hosting life? As usual, the answer is, it depends.
Chilly, damp Mars may have hosted an ancient ocean By Charles Q. Choi published 18 January 22 Three billion years ago, the dusty planet we know today was a very different world.
Pentagon launches new UFO office. Not all believers are happy about it. By Stephanie Pappas published 15 January 22 The U.S. government will officially investigate UFOs with a new office based in the Pentagon.
Infamous Mars meteorite contains organic molecules, but they aren't proof of life By Charles Q. Choi published 13 January 22
Roswell Incident: The truth behind the 'flying saucer' crash By David Crookes, All About Space magazine last updated 13 January 22 reference Did a UFO really crash land at Roswell, New Mexico in 1947, only to be hushed up by the government?
Tour Mars' Jezero Crater with this gorgeous Perseverance rover mosaic (video) By Mike Wall published 3 January 22 A detailed new image provides a great look at the Perseverance Mars rover's Red Planet home and shows why the mission team is so excited to explore it.
2021 was an epic year for Mars exploration By Mike Wall published 31 December 21 During this very eventful year, two nations joined the Mars club, a robot plied Red Planet skies for the first time ever and humanity kicked off an ambitious interplanetary sample-return campaign.
9 things we learned about aliens in 2021 By Brandon Specktor published 31 December 21 A bombshell UFO report, the "alien junk" in our solar system, and more new clues about extraterrestrial life.
How Do You Spot an Alien Planet from Earth? (Infographic) By Karl Tate last updated 30 December 21 Astronomers have developed some clever methods of detecting tiny planets orbiting distant stars.
Fermi Paradox: Where are the aliens? By Elizabeth Howell published 17 December 21 The universe is incredibly old, incredibly large and teeming with potentially habitable planets. So why haven't we found any sign of aliens yet?
The 'Black Knight' satellite: A hodgepodge of alien conspiracy theories By David Crookes, All About Space magazine published 17 December 21 According to conspiracy theorists, the Black Knight satellite is an alien spacecraft orbiting Earth. Here's what's really going on.
NASA's Perseverance rover finds organic chemicals on Mars By Mike Wall published 16 December 21 Perseverance has identified carbon-containing organic chemicals in some of the rocks it's examined on the floor of Mars' Jezero Crater.
How changing levels of iron shaped the evolution of life on Earth — and why alien hunters should take note By Hal Drakesmith, Jon Wade published 11 December 21 During the development of life on planet Earth over billions of years, iron deficiency may have stimulated evolution.
I'm an astronomer and I think aliens may be out there — but UFO sightings aren't persuasive By Chrisy Impey last updated 10 December 21 If intelligent aliens visit the Earth, it would be one of the most profound events in human history.
The Kardashev scale: Classifying alien civilizations By Meghan Bartels last updated 10 December 21 The Kardashev scale classifies hypothetical alien civilizations by how much energy they use.
Why are we still searching for intelligent alien life? By Paul Sutter last updated 10 December 21 Humans have scanned and searched the heavens for signs of other advanced civilizations in the universe. And we've found nothing. Absolutely nothing. Maybe we shouldn't focus on intelligent life.
Earth Bloomed Early: A Fermi Paradox Solution? By Ian O'Neill last updated 10 December 21 According to observations by Hubble and Kepler, the universe has only just begun to produce habitable worlds — what does this mean for the evolution of intelligent life?
How would we give aliens directions to Earth? By Joanna Thompson published 3 December 21 Giving aliens directions to Earth might be tricky, but scientists have some ideas for how to do it.