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Earth
Space
How to see Earth’s shadow at sunrise and sunset
Just before sunrise and after sunset, you can spot Earth's shadow. Look west at sunrise and east at sunset. Learn more about Earth's shadow here.
November 3, 2026
Sun
Sun news November 3: How a quiet sun still stirs up auroras
Sun news November 3, 2026: Few sunspots, but still auroras? Thank coronal holes! Their fast solar wind can stir Earth’s magnetic field for days.
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, Jupiter and Regulus. And watch for Taurid meteors!
November 2, 2026
Space
Swift spacecraft fiery reentry will be in the next 2 days
The Swift spacecraft is falling back to Earth. It will likely burn up in our atmosphere on November 3 or 4. Will you see it?
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
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