Space
Do black holes split into smaller black holes?
Black holes sometimes merge. But could 1 split into 2 or more? A new study explores the conditions that might allow it, including extremely rapid rotation.
Space
Did the Viking 2 lander detect marsquakes in 1976?
New analysis shows that 2 possible marsquakes detected by Viking 2 were in the same region as nearly 1,000 others detected by the InSight lander decades later.
Sun

Sun news November 1: The day the sun wasn’t done yet

Sun news November 1, 2026: 23 years ago today, Earth caught its breath between Halloween storms. But the sun had bigger blasts in store. Stay tuned!
Human World

November birthstone: Choose from either topaz or citrine

The November birthstone, topaz, comes in lots of colors. It's a much-loved gemstone in jewelry, with myths that date to ancient times. Or choose citrine.
Astronomy Essentials
Tonight

Visible planets and night sky guide for October and November

Visible planets and night sky guide. Tomorrow morning, the moon will hang close to Mars. And watch a video about the astronomical holiday we call Halloween.
Space

New dwarf planet discovered by Rubin?

Astronomers using the Rubin Observatory have discovered a new dwarf planet candidate. It lies just beyond the orbit of Pluto.
Earth

Ghostly white animals: What’s the cause?

Happy Halloween! They might look ghostly, but white animals are not ghosts. Here's the science behind why some creatures lose their color.
Earth
Space

Could the Taurid meteors bring a risk of airbursts in 2026?

A researcher says the Taurid meteor shower could bring an increased risk of an airburst in 2026. But these Halloween fireballs are based on 2 big IFs.
Human World

Daylight Time ends Sunday: 7 tips to help you adjust

Daylight Time ends on November 1, 2026. Here are 7 tips from the American Academy of Sleep Medicine to help you adjust to the time change.
Astronomy Essentials
Human World

Halloween is an astronomy holiday. It’s a cross-quarter day

A cross-quarter day falls between an equinox and a solstice. Halloween is the year's 4th cross-quarter day and the spookiest of them all.