The tally is in! 6,000 exoplanets now confirmed

NASA announced this week that it has confirmed a tally of 6,000 exoplanets, or worlds orbiting distant stars. The first exoplanets were discovered 30 years ago.

Volcanic sulfur on Mars could have been helpful for life

Did early Mars support life? A new study shows how volcanic sulfur on Mars could have kept the planet warm and wet enough to be habitable billions of years ago.

Astronomers glimpse growth of baby planet shrouded in dust

Using the Very Large Telescope, astronomers have seen the growth of baby planet AB Aurigae b. It is still surrounded by dust in its protoplanetary disk.

Tiny asteroid 2025 RJ2 makes close flyby of moon and Earth

A tiny asteroid made a close pass by Earth and an even closer pass by the moon yesterday and earlier this morning. It posed no threat to us.

Do ‘black hole stars’ solve a puzzle in the early universe?

Astronomers have proposed black hole stars to explain the mysterious little red dots that Webb has seen in the early universe.

Exoplanet TRAPPIST-1e: New hints of a habitable world?

The 1st analysis results from the Webb space telescope indicate that exoplanet TRAPPIST-1e might have an atmosphere of nitrogen and methane.

NASA announces Mars rock as a potential biosignature

NASA said at a press conference on September 10, 2025, that a Mars rock explored by the Perseverance rover is a potential biosignature.

Do organics in Enceladus’ plumes really come from its ocean?

Scientists have thought the organics in Enceladus' plumes originate in its ocean. A new study suggests at least some of them might be formed by radiation.

Mysterious gamma-ray burst is unlike any detected before

Astronomers have spotted a mysterious gamma-ray burst that lasted for a day. This is by far the longest event we've seen of its kind. So what caused it?

130 years of data on planetary nebula IC 418 puzzle scientists

Astronomers looked at 130 years’ worth of data on planetary nebula IC 418. They found its central star is heating up faster than any star ever observed.