Celestial Alert

SpaceX launches SPARCS telescope from Vandenberg to study low-mass stars and UV radiation effects on habitable planets around distant stars in search for life.

Explore key moments in astronomy history from December 8-14, including the 60-inch Hale Telescope's first light, Apollo 17's moon landing, and Mariner 2's Venus flyby.

Comet 3I/ATLAS, the third known interstellar object ever observed, offers astronomers rare insights into worlds beyond our solar system. Discover its unusual composition and behavior.

Watch Saturn reach opposition on September 21, 2025, when the ringed planet appears biggest and brightest. See Saturn in the night sky with a telescope or binoculars this month.

Watch the Perseid meteor shower in Flagstaff this August. Discover the best viewing times, locations near Mars Hill, and tips for optimal stargazing in Arizona.

Discover everything you need to know about the March 13, 2025 total lunar eclipse visible across North America. Learn when to watch, where to view, and why the Blood Moon glows red.

Witness a rare seven-planet alignment visible from Earth this week. Learn which planets you can see with naked eyes, how often these celestial events occur, and the best astronomy apps to locate them.

Watch the 2024 Perseid Meteor Shower light up the July-August sky. Learn about this reliable annual meteor shower, its parent comet Swift-Tuttle, and how to see falling stars.

A rare nova explosion could soon appear in the night sky before summer ends. Learn what causes this sudden stellar brightening and when astronomers expect to see this temporary new star.