Artist’s concept of 2 active supermassive black holes at the heart of 2 merging galaxies. Each…
Category: Earth Sky
Why are Mars’ polar caps different from each other?
View larger. | Perspective view of Mars’ north polar ice cap from ESA’s Mars Express orbiter.…
Question mark galaxy? Gravity lens creates cosmic graffiti
When, where, how? The cosmos is full of questions. Still, astronomers using NASA’s James Webb Space…
Jupiter’s moon Io has a new volcano! See pics here
Here’s an image of Jupiter’s moon Io from February 2024. The black-and-white inset shows the same…
Earth to get an asteroid mini-moon for 2 months
Newly-discovered #asteroid 2024 PT5 is about to undergo a “mini-moon event” when its geocentric energy becomes…
See the most-detailed star bubbles yet in new video
Watch the motion of star bubbles on the surface of the star R Doradus in the…
Human-made meteor shower could hit Earth in a decade
In this 1-minute video, EarthSky’s Will Triggs tells you about the human-made meteor shower that could…
A buddy for Betelgeuse? Does this mean no supernova?
The red supergiant star Betelgeuse is a beloved star, bright and easy to see in the…
Moon crazy, with Robert Reeves
The Earth and its moon are locked together in a codependent embrace. How does the moon…
Moon’s volcanoes were erupting only 120 million years ago
View at EarthSky Community Photos. | The lunar maria – once thought to be seas –…