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Watch ISS spacewalk Thursday
2 International Space Station (ISS) astronauts will perform a spacewalk on February 15. Live TV coverage starts at 10:30 UTC (5:30 a.m. EST). The spacewalk begins at 12:10 UTC (7:10 a.m. EST) and lasts about 6 hours.
February 13, 2018
Future cities built with volcanic ash?
After water, concrete is the world's most-used building material. MIT researchers worked with volcanic ash as a concrete additive and substantially reduced building costs.
February 11, 2018
Day Zero approaches as Cape Town’s water runs out
Cape Town - the South African city of 3.7 million people - is on the verge of running out of water. Day Zero is the day the taps will get turned off.
February 11, 2018
Where is Elon Musk’s car going?
It was meant to go into an orbit that would take it past Mars, but where's it going really? Plus, see outer space from the vantage point of Starman, the mannequin in Elon Musk's red Tesla Roadster, and much more.
February 10, 2018
What is radiocarbon dating?
At a very steady rate, unstable carbon-14 gradually decays to carbon-12. The ratio of these carbon isotopes reveals the ages of some of Earth's oldest inhabitants.
February 9, 2018
View of Winter Olympics from space
Ready for the Olympics? Here's a look at the sites of the 2018 Winter Games, the South Korean cities of Pyeongchang and Gangneung, from above.
February 8, 2018
Harvard study links breast cancer to light at night
Artificial light has transformed the night sky, a change researchers continue to link to health problems.
February 8, 2018
Humans witnessed fire-covered Earth at end of Ice Age
New research suggests that some 12,800 years ago, an astonishing 10 percent of the Earth’s land surface was consumed by fires, thanks to a cosmic impact.
February 7, 2018
James Webb Telescope arrives in California
The James Webb Telescope's 2 component halves had been undergoing testing in Houston. They're now at Northrop Grumman Aerospace Systems in California, about to be assembled.
February 7, 2018
Watch online as 2 asteroids sweep close this week
How to watch online this week as 2 newly discovered asteroids - 2018 CB and 2018 CC - sweep closer to Earth than the moon.
February 5, 2018
