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Astronomy.com is a specialized science outlet dedicated to astronomy, space science, and observational stargazing.
- Indexed articles, last 90 days
- 208
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- Sep 30, 2026
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- Jul 3, 2026
Latest articles
Starship reaches orbit on 14th test flight (opens the original)
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After 13 previous suborbital test flights, Starship finally reached orbit on test flight 14. SpaceX’s launch window opened at 8:15 a.m. EDT on Monday, Sept. 28, and the rocket cleared the tower at Starbase, Texas, at 8:48 a.m. EDT. Just over three hours later, the flight ended in a fireball in the northern Pacific Ocean. The flight plan called for Starship to settle into an orbit roughly 170 miles (275 kilometers) high and circle the planet about six times. Along the way, it would release 26 Sta
The Sky Today on Wednesday, September 30: Asteroid Nausikaa at opposition (opens the original)
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Looking for a sky event this week? Check out our full Sky This Week column. Asteroid 192 Nausikaa reaches opposition at 6 P.M. EDT in the constellation Pisces, just north of Saturn and Neptune’s position on the sky. About 62 miles (100 kilometers) wide, Nausikaa is a rough-edged, slightly oblong rocky body in the inner region of the main belt. It now shines at magnitude 8.5, within reach of binoculars or any telescope. The nearest bright star is 3rd-magnitude Algenib (Gamma [γ] Pegasi), which is
September's best new astronomy products (opens the original)
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The Knopf Doubleday Publishing GroupNew York, New York In The Edge of Space-Time: Particles, Poetry, and the Cosmic Dream Boogie, Chanda Prescod-Weinstein — professor of physics at the University of New Hampshire and the first Black woman to earn tenure in theoretical cosmology — explores black holes, dark matter, and the edges of the observable universe. Drawing from particle physics, Black feminist thought, Langston Hughes, Star Trek, and Alice in Wonderland, she reveals a cosmos so vast and s
The Sky Today on Tuesday, September 29: Ganymede transits Jupiter (opens the original)
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Looking for a sky event this week? Check out our full Sky This Week column. Jupiter’s largest moon, Ganymede, transits the gas giant’s disk this morning. Some part of the event, which lasts more than three hours in total, is visible for all U.S. observers. Jupiter is currently in Leo, rising around 3 A.M. local daylight time. The bright planet shines at magnitude –1.9, outshining 1st-magnitude Regulus, the Lion’s brightest star, which lies to Jupiter’s east and follows it up into the eastern sky
The Sky Today on Monday, September 28: Open cluster M39 shines (opens the original)
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Looking for a sky event this week? Check out our full Sky This Week column. Although the Moon still dominates much of the night, bright deep-sky objects far from our satellite’s location remain well within reach. A few hours after sunset, M39 in Cygnus is some 80° high in the north, perfect for viewing with any optics you’ve got on hand. M39 is an open cluster of young stars located about 9.2° northeast of Deneb, the Swan’s bright alpha star and one of the three points in the famous Summer Trian
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