Day

Early on April 24, Venus will be at its brightest in the morning sky — just 67 days after it was at its brightest in the evening sky. Here's why.

We may never have satisfying answers.

Observations and sample-return missions show us that space rocks tend to be rich in water, carbon and organic compounds. Yet meteorites on Earth are not. Why? The post Most meteorites that hit Earth aren't typical. Why? first appeared on EarthSky.

Scientists have detected unique chemical patterns similar to those produced by Earth's algae and seaweed — raising the possibility of the presence of a warm ocean, perhaps teeming with life, on a planet 729 trillion miles away.

The new comet SWAN25F is approaching the sun and you can currently see it with binoculars in the morning sky. Keep track of its progress here. The post New Comet SWAN25F! See it in binoculars now first appeared on EarthSky.

When this nearby binary system explodes, it will be 10 times brighter than the moon.

As Saturn and Earth line up, Saturn's iconic rings will appear to vanish.

Huge Magnetic 'Ropes' Are Behind Powerful Solar Explosions

NASA's Curiosity Rover has discovered long carbon chains on Mars. On Earth, molecules like these are overwhelmingly produced by biological processes.

Its bland exterior belies a dynamic world full of surprises

They'll be back.

Saturn's iconic rings will appear to be invisible starting this weekend because of the way the planet's tilt aligns with Earth's.

What's out there?

Our solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may have had a lasting impact on Earth's climate, according to a new study.

The farthest-flung human-made objects will be able to take their science-gathering even farther, thanks to these energy-conserving measures.

Today, the European Space Agency's gamma-ray telescope ends its observations. During its 22 years in space, Integral has reshaped our view of the most dramatic events in the universe. The high-energy observatory played a pivotal role in revealing the nature of the cosmic explosions known as gamma-ray bursts and in uncovering the origin of gravitational wave events. Recently, it delivered unique insights into how…

"Like finding a snowball that hasn't melted in a fire."

Once March begins, Mercury, Saturn and Neptune will have drifted too close to the sun to be readily visible.

New research questions how the Red Planet got such a rusty hue.

The full moon for February 2025 will peak on Wednesday morning. Here's when to see it and why it's called the snow moon.