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Is there a North Star for Mars?
Is there a North Star for Mars ... a guide star for future explorers? Not in any satisfying way. But Martian stargazers wouldn't lack for things to see!
November 17, 2024
Mirach is your guide star to finding 3 galaxies
Mirach in the constellation Andromeda helps stargazers locate the Andromeda Galaxy, the Triangulum Galaxy, and "Mirach's Ghost" (NGC 404).
November 10, 2024
Open star clusters are loose groups of stars
Open star clusters are young, loosely bound gatherings of stars that may still be surrounded by the nebula - or space cloud - in which they were born.
November 5, 2024
Alpheratz belongs to Andromeda, but is part of the Great Square
Alpheratz appears to our eyes as a single star but it is actually a close binary star system. Many stargazers use it to locate the Andromeda galaxy.
October 9, 2024
Flashing star in autumn? Here are 3 candidates
Some October night, check out 3 of the flashiest stars in the night sky ... at least at this time of year. And here's why you see these as a flashing star.
October 3, 2024
Annular solar eclipse today! See a ring of fire
Today, an annular solar eclipse will cross over parts of South America, the Pacific Ocean, the Atlantic Ocean, and Antarctica. Watch a livestream here.
October 2, 2024
Partial lunar eclipse September 17-18, 2024
A shallow partial lunar eclipse takes place on September 17-18, 2024. It's visible in most of the Western Hemisphere. Maps and details here.
September 17, 2024
Extreme weather: We haven’t seen the worst yet
Earth's climate is now changing so rapidly that traditional meteorological forecasting models are failing to predict extreme weather.
August 6, 2024
Want to find the Andromeda galaxy? Here are 2 ways
Find the Andromeda galaxy on dark, moonless skies from now until the beginning of northern spring. Here are 2 ways to find it.
August 2, 2024
M6 and M7: Open star clusters in the Scorpion’s Tail
M6 and M7 are star clusters near Scorpius’ stinger. But you’ll need a dark sky to see these faint but stunning stellar aggregations.
July 18, 2024
