Comet A3 was the brightest comet in 27 years!

Comet A3 Tsuchinshan-ATLAS was the brightest comet in 27 years, since Hale-Bopp. Did you see it? More on the comet plus images here.

60% chance for La Niña in late 2024. Mild or cold winter?

The National Oceanic and Atmospheric Administration has issued a La Niña Watch for the northern autumn of 2024. If it happens, conditions will likely persist to early 2025.

Sun officially reaches solar maximum in its 11-year cycle

NASA and NOAA announced on October 15, 2024, that the sun has reached the peak of its 11-year solar cycle, or what is known as solar maximum.

A steam world exoplanet with an earthlike atmosphere?

Astronomers using the Webb space telescope say that the hot exoplanet GJ 9827 d has more water vapor than 1st thought. They call it a steam world exoplanet.

Meet Piscis Austrinus the Southern Fish and lonely Fomalhaut

Piscis Austrinus the Southern Fish is notable for its 1 bright star, Fomalhaut. From the Northern Hemisphere, look south in autumn to find it.

Monday’s livestream: Extreme weather and climate change with Davide Faranda

Watch our replay about climate change and extreme weather with climatologist Davide Faranda, an expert on cold spells, heatwaves and severe thunderstorms.

Comet A3 has an anti-tail! Can you see it?

Comet A3 and Earth have passed their closest point. But, early this week, we're crossing the plane of the comet's orbit. Some are seeing an anti-tail!

Ice on the moon is widespread, new study shows

A new NASA study of permanently shadowed regions near the lunar south pole shows that there is a lot more water ice on the moon than previously thought.

Lifeform of the week: Snails are full of surprises

There are many surprising facts about land snails. Did you know a snail is both male and female? And they can have 25,000 teeth? More here!

Jupiter’s Great Red Spot wiggles like gelatin

New observations with the Hubble Space Telescope show that Jupiter's Great Red Spot wiggles like a bowl of gelatin. It squeezes in and out like a stress ball.