Earliest sightings of a young crescent in the west after sunset mark the start of the Islamic holy month of Ramadan. When will the UAE's moon-sighting committee see this month's young moon? If they're using binoculars and telescopes (and have clear skies), they might see it May 5. For the eye alone, the date is probably May 6.

A University of Chicago physicist has laid out an innovative method - using the Higgs boson - for stalking dark matter. He said the Higgs might actually be "a portal to the dark world."

A recent study of pigs' brains suggested some activity could be restored even after they'd been dead 4 hours, reinforcing the idea that death is a process. A neuroscientist explains.

For the 1st time, the European Space Agency will cover progress of a hypothetical asteroid impact scenario - this week - live via social media, from the heart of the Planetary Defense Conference in Washington, DC.

When you look in a mirror, the face you see is the result of millions of years of human evolution. Here's an interview with an expert discussing how and why our modern human faces evolved to look as they do today.

Easter is this Sunday. Astronomer Guy Ottewell explains why it's a late Easter, but not the latest it can be.

NASA hopes to send astronauts to the surface of the moon in 5 years, and has planned a landing site where no human has yet been: the lunar south pole.

A bright meteor was caught in many dashcam videos - in broad daylight - on April 6, 2019, over the Russian city of Krasnoyarsk. See a video compilation here.

The NASA Twins study - featuring astronaut twins Scott and Mark Kelly - was the perfect space experiment. Scott spent a year in space aboard the International Space Station. Mark remained on Earth. The results?

An EarthSky community member - Jody Kuchar - alerted us to the webcam, which is based in Wisconsin. Thank you, Jody!