1+ day, 2+ hour ago   (140+ words) Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has been focused on capturing radio signals that alien species have sent out, whether intentionally or unintentionally. That creates a huge “synchronicity” problem - what if there aren’t any alien…...

4+ day, 13+ hour ago   (28+ words) UK astronomers have uncovered new clues about the origin of 3I/Atlas – only the third known object from beyond our Solar System ever spotted in our cosmic neighbourhood....

5+ day, 22+ hour ago   (543+ words) The Giant Impact Hypothesis says that about 4.5 billion years ago, a Mars-sized world named Theia slammed into the young Earth. The cataclysmic impact sent debris into a torus orbiting Earth, and out of that material the Moon formed. The hypothesis…...

1+ week, 3+ day ago   (188+ words) In 1992, Centaur 450P/LONEOS had a close encounter with Saturn, shifting its orbit closer to the Sun. Now astronomers can observe how a small icy body transforms into a comet over time....

1+ week, 5+ day ago   (68+ words) Keeping track of time in the universe is a difficult task. It’s constantly evolving and changing, and studying events that happened billions of years ago, while possible, isn’t exactly easy. A recent paper in the Monthly Notices of the Royal…...

1+ week, 6+ day ago   (824+ words) The planet Mars is a cold and dry world completely devoid of life, but billions of years ago things were much different. This is when Mars had a much warmer interior than it does today, resulting in active volcanism that…...

1+ week, 6+ day ago   (134+ words) Sure. It’s just another image of Phobos crossing the disk of the Sun, as seen from the surface of Mars. Like so much of the modern space era, these images, once amazing, are now almost routine. But there’s some real…...

2+ week, 11+ hour ago   (840+ words) The planet Jupiter hosts more than 100 moons with the majority of attention going to the four Galilean moons, Io, Europa, Ganymede, and Callisto. This is primarily due to their active geology, including Io being the most volcanically active planetary body…...

2+ week, 15+ hour ago   (130+ words) At least once in our lives, we’ve all seen a bright streak of light briefly blaze across the sky and have quickly referred to it as an asteroid, meteor, shooting star, comet, or some other whimsical name we’ve heard others…...

2+ week, 16+ hour ago   (422+ words) When a meteoroid hits the Moon's surface, it does more than just dig up a little dirt. It actually excavates a little bit of cosmic history that recorded a long-ago supernova explosion. Scientists at the University of Hawaii Institute of…...