Earth
Space
Asteroid 2024 YR4 chance of hitting Earth up to 1 in 38
On February 17, 2025, NASA's Center for Near Earth Object Studies slightly increased the odds of asteroid 2024 YR4 hitting us in 2032 to 1 in 38.
Earth
Sun
Today’s sun news: Flare activity is rising again
Sun news February 17-18, 2025. The solar wind speed has declined, while flare activity on the sun is picking up. A CME might still produce more auroras.
Astronomy Essentials
Tonight

Visible planets and night sky guide for February

Visible planets and night sky guide for February 2025. In mid-month, there are still 4 - going on 5 - planets in the evening sky. Here's how to see them!
Earth

New fish species named for Princess Mononoke

A new fish species found in a Chinese fish market has distinctive cheek stripes, earning it the name of a character from the animated movie "Princess Mononoke."
Space

Why won’t the Blaze Star explode? (and how YOU can see it when it does)

We're still waiting for the Blaze Star to go nova! Here's how to find the constellation Corona Borealis so you're ready when it happens.
Earth

Lightning strikes on Earth can trigger electron showers

Scientists have found evidence that lightning strikes on Earth can send showers of electrons raining down from radiation belts surrounding the planet.
Space

Speediest exoplanet found near Milky Way center?

Astronomers have discovered what might be the speediest exoplanet system found so far. It moves at 1.2 million miles per hour (1.9 km per hour).
Astronomy Essentials

See the zodiacal light in dark skies beginning around now

The zodiacal light is an eerie light extending up from the horizon. During the months around the March equinox is a good time to see it. How to see it, here.
Earth
Space

For you, Valentine. Heart photos from nature

This Valentine’s Day, we find so much to love in the many heart shapes right here on Earth and all the way out in remote spots of the universe.
Human World
Space

Pale Blue Dot 35 years later: Earth in a sunbeam

February 14, 2025, is the 35th anniversary of the Voyager 1 image of Earth. Voyager was near Saturn when it took this image, now known as the Pale Blue Dot.