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3 years of the Webb telescope: Here’s what it’s discovered

In the 3 years since it was launched, Webb has made a host of intriguing discoveries. Here's a rundown of its most important findings so far.

EarthSky Voices

January 7, 2025

Mystery dark spot on Enceladus intrigues scientists

Scientists found an unusual dark spot on Enceladus while looking at old images sent back by Cassini. The odd reddish-brown patch faded away over 3 years.

Paul Scott Anderson

January 2, 2025

When you wish upon a star, is it already dead?

Some cynics say that when you wish upon a star, that star is already dead. But don't listen to them! The stars you can see, and your dreams, are perfectly safe.

EarthSky Voices

January 2, 2025

What is the Big Bang?

In the view of modern cosmologists, the Big Bang is the event that marked the birth of our universe. What was it - when was it - and what are modern theories?

Andy Briggs

January 1, 2025

Mars starts a new year: avalanches, icy explosions and dunes

A new and explosive year began on Mars on November 14, 2024. NASA and its partners are tracking the season's strange and unique features.

EarthSky Voices

December 31, 2024

Are there liquid water brines on Mars? New study casts doubt

Scientists have hypothesized how liquid water brines on Mars could occur. A new study, however, suggested it's more unlikely than previously thought.

Paul Scott Anderson

December 29, 2024

Parker Solar Probe survived its close brush with the sun!

The Parker Solar Probe reported back after "touching the sun" on December 24. It’s in good health and operating normally.

Kelly Kizer Whitt

December 27, 2024

Io’s raging volcanoes are self-powered

Does Jupiter's moon Io have a global subsurface magma ocean? A new study said no, and that Io's raging volcanoes are self-powered with their own magma pools.

Paul Scott Anderson

December 26, 2024

Exoplanet TRAPPIST-1 b might have a hazy atmosphere

Does exoplanet TRAPPIST-1 b have an atmosphere? A new study said it either has a hazy atmosphere or is geologically active, with volcanoes or plate tectonics.

Paul Scott Anderson

December 24, 2024