R.I.P. John Dobson

John Dobson is a hero to all who love astronomy, telescopes, and astronomy for the public.

A day later, caffeine stimulates memory

Caffeine helps people remember fine distinctions between similar things at least up to 24 hours after it is consumed, new research shows.

Primates, including humans, burn half as many calories as other mammals

The study suggests that our remarkably slow metabolisms explain why humans and other primates grow up so slowly and live such long lives.

Harnessing the sun’s energy during the day for use at night

"It's not practical to talk about powering a planet with energy stored in batteries. It's more reasonable to store energy in the chemical bonds of molecules." - Tom Meyer

Did China test a new hypersonic glide vehicle?

A story is circulating on social media about China's new hypersonic glide vehicle. Here are some questions.

Seeking safe havens for biodiversity, as climate changes

Australian researchers say their new technique will help them find sites where populations of organisms can potentially survive, as rainfall continues to decline.

Starting fire with water

Astronauts on the ISS are experimenting with "supercritical water," a form of water with a strange property: it can help start fire.

Fireball, brighter than moon, seen January 12 in U.S. East

Hundreds of witnesses have filed reports with the American Meteor Society about a large, bright, long-lasting fireball over the U.S. East Sunday evening.

Venus, about 8 hours before January 11 inferior conjunction

Check out this beautiful photo of Venus, only 8 hours before it passed more or less between the Earth and sun on January 11, 2014.

Best images from China’s Chang’e moon mission so far

The mission set down on moon on December 14, 2013 at 9:12 p.m. Beijing time. China is the third country to land on the moon, after U.S. and former Soviet Union.