Read news from the world of astronomy for the week of September 19, 2025.
This week in the world of astronomy, see Titan transit Saturn and catch Comet SWAN25B. Plus, learn about a potential storm of asteroid impacts that happened some 800 million years ago.
A surge of asteroids might have peppered the inner solar system some 800 million years ago, in a short-lived shower that left its mark — literally — on Earth and its neighbors.
Astronomers using the James Webb Space Telescope have confirmed that, just 800 million years after the Big Bang, there is a galaxy that contains a supermassive black hole — and not much else.
Congratulations to amateur astronomer Vladimir Bezugly of Ukraine! He discovered a bright new comet on September 11th around 1:45 UT in publicly posted images.
September’s night sky features the iconic Summer Triangle, almost directly overhead at nightfall, and a newcomer to the evening sky: the planet Saturn.
Hofstra University’s Astronomy Festival on the National Mall in Washington, DC, offers visitors a free guided tour of the sky on Saturday, September 20, from 5-11 p.m.
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