If microbe fossils are on Mars, a rock quarry in Algeria might lead us to them

a pinkish-brown rock resembling a rose

Scientists searching for the fossilized remains of ancient microbes on Mars now have a better idea of what signs they should be looking for, thanks to a new study of Earthly microbial fossils embedded in the mineral gypsum that was produced when the Mediterranean Ocean dried up over 5 million years ago. Mars was once … Read more

The Winter Triangle meets the ‘Mars Triangle’ in the night sky this month

an illustration of the night sky showing a triangle formed from the two stars castor and pollux and mars

We’re now just past the midpoint of astronomical winter — that moment marking the midway point between December’s winter solstice and March’s vernal equinox. That moment took place at 4:11 p.m. Eastern Time on Feb. 3. And as darkness falls this week, we have what many refer to as the “Winter Triangle” dominating the southeast … Read more

NASA delays Artemis missions again. What could this mean for the moon, Mars and space leadership?

NASA’s first two crewed Artemis moon missions have been pushed back to 2026 and 2027, respectively, and the move could have big ramifications for the agency’s Artemis program and competition with China for leadership in space. Artemis 2, which will send a crew of three Americans and a Canadian astronaut around the moon, was due … Read more

See the moon meet up with Mars this in the night sky tonight

If the weather is clear where you live on Tuesday evening (Dec. 17), look low above the east-northeast horizon at around 8:00 p.m. local standard time and you’ll see the waning gibbous moon, 89% illuminated, accompanied by a very bright and colorful star directly below it and two bright stars will above it. The two … Read more

Human artifacts abandoned on Mars should be cataloged to track our migration beyond Earth

Scientists are calling for the cataloging of human artifacts left on Mars — from spacecraft and landers to rovers, probes, and other debris — to document humanity’s earliest steps in interplanetary exploration. “Our main argument is that Homo sapiens are currently undergoing a dispersal, which first started out of Africa, reached other continents, and has … Read more