Come to know the Summer Triangle

Coming to know the Summer Triangle, then seeing it again and again on summer nights, is a deep pleasure that adds to the enjoyment of this season.

The most ancient spiral galaxy yet

Astronomers have discovered a spiral galaxy surprisingly near the beginning of the universe, making it the most ancient spiral galaxy found so far.

What is the age of Earth?

Our planet does not give up its age easily. Scientists studied the oldest rocks from our planet and solar system to figure out Earth's age.

May lunar eclipse and a colorful cosmic cloud

Absolutely astounding! Wonderful photos of 2021's first eclipse - the May lunar eclipse - near the Rho Ophiuchi Cloud Complex.

SpaceX CRS-22 mission Thursday will carry tiny crewmates

CRS-22 - SpaceX’s 22nd cargo launch for NASA - will send bobtail squid and tardigrades to ISS this week. The launch is scheduled for June 3. How to watch, here.

Holding the Singapore sun

So creative and original! This EarthSky community member captured some Singapore sun rays on May 30, 2021.

Active seafloor volcanoes on Jupiter’s moon Europa?

New research suggests active seafloor volcanoes on Jupiter's moon Europa. Are they linked to life? The planned Europa Clipper mission might provide answers.

New water clues on Uranus and Neptune

The ice giant planets Uranus and Neptune are unlike any others in our solar system. New research from the U.S. and South Korea suggests that the deep interior water layers of the ice giant planets may be rich in magnesium.

Lucky strike: Space debris smacked ISS robotic arm

Space officials called it a "lucky strike" when space debris smacked into the skinny robotic arm on the space station, creating a hole now seen in images.

Curiosity sees rare clouds on Mars

Clouds on Mars are infrequent, but the Curiosity rover has captured some. Scientists are analyzing the images to learn about these elusive atmospheric delights.