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Space
Interstellar object Comet 3I/ATLAS: What we know now
We have a new interstellar object visiting our solar system! Comet 3I/ATLAS is speeding through our neighborhood. Get finder charts here.
July 16, 2025
Space
Are dark dwarfs lurking in the heart of the Milky Way?
Do dark dwarfs - theoretical dwarf stars made of dark matter - exist in our galaxy? New research suggests how and where to find them.
July 16, 2025
Brightest Stars
Summer Triangle star Deneb is distant and luminous
When you gaze at the bright star Deneb, you’re gazing across thousands of light-years of space at one of the bright stars of the huge Summer Triangle asterism.
July 16, 2025
Earth
Sun
Sun news: See a beautiful blob of sun-stuff
Sun news July 16, 2025. Yesterday's fantastic prominence eruption produced a beautiful coronal mass ejection. See it here!
July 16, 2025
Astronomy Essentials
Tonight
Visible planets and night sky guide for July
Visible planets and night sky guide. With Mercury now leaving the evening sky, Mars will be the sole planet visible after dark in the west.
July 16, 2025
Earth
Tropical disturbance to impact Gulf Coast this week
A tropical disturbance will bring wind and rain to the Gulf Coast states this week. It has the potential to strengthen into Tropical Storm Dexter.
July 15, 2025
Earth
Grand Canyon fire destroys historic lodge, trails closed
Fire at the Grand Canyon destroyed a historic lodge and closed most hiking trails inside the canyon. Wildfires have also closed Black Canyon of the Gunnison.
July 15, 2025
Earth
Celebrate Arctic Sea Ice Day with belugas, bears and more
Arctic Sea Ice Day is today, July 15, 2025. And you can participate! Snap pics from a Beluga Boat with attached live cams and classify the whale bits you see.
July 15, 2025
Earth
Teenage Greenland sharks’ hangout spot revealed in new study
Scientists have discovered a high number of juvenile Greenland sharks in Skagerrak, a body of water between Denmark, Norway and Sweden.
July 15, 2025
Constellations
Scutum the Shield is named for a Polish king
Constellation Scutum consists only of a few stars, but it's noticeable in a dark sky because a rich region of the Milky Way is behind it.
July 15, 2025
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