Discover the significant world events, notable birthdays, and notable deaths that occurred on October 24. Check what happened ...

"If the object is an alien spacecraft slowing down, and the anti-tail is braking thrust, then this change from anti-tail to ...

In the oldest municipal observatory in Iowa, a crowd gathers every Friday at 8 p.m. to learn about astronomy, history and ...

Elizabeth C. Babcock, who previously worked as president and CEO of the Smithsonian American Women's History Museum in ...

Comets Lemmon and SWAN are making their closest approach to the Earth tonight, Oct. 21. Here's how you might see them with ...

When treasure hunters Mario Renner and Henry Westphal turned on their metal detectors in 1999 and started sweeping the ground ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

While researchers say they've found a potentially habitable planet, it'll take a new generation of telescopes to figure out ...

The Cincinnati Observatory is considered the birthplace of American astronomy.

The ancient Cheomseongdae astronomical observatory will be illuminated with a media art display to commemorate Gyeongju's ...

Science history On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular ...