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Astronomy Essentials
Tonight
Visible planets and night sky guide for 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.
November 2, 2026
Space
Did comets seed life on Earth? A new study says — probably not
Did comets seed life on Earth? It's unlikely, a new study from the University of Cambridge says. It would have been a very rare occurrence.
November 1, 2026
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.
November 1, 2026
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.
November 1, 2026
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.
November 1, 2026
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.
October 30, 2026
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.
October 30, 2026
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.
October 30, 2026
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.
October 30, 2026
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.
October 30, 2026
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