Don't miss Mercury's transit! It only happens 13 times per century.
By Dominique Bonessi
February 2016 was hot, really hot. So hot, climate scientists could not find the superlatives to describe February 2016’s record breaking temperature.
By Nsikan Akpan
NASA's New Horizons mission to Pluto continues to astonish in new set of five studies on the dwarf planet.
At 2 p.m. EST today, astronaut Scott Kelly will be live from NASA’s Johnson Space Center in Houston, where he will share his personal perspective on his 340-day mission in space.
By PBS NewsHour
Astronaut Scott Kelly spent 340 days -- the longest an American has ever been in space -- on the International Space Station before descending into Kazakhstan by capsule Tuesday evening. Kelly’s extraterrestrial sojourn was part of a study on the…
By Nsikan Akpan
Watch this supercut of Scott Kelly's best pictures and videos, and hear what he had to say about his year in space before departing.
By Michael D. Regan
A record number of potential astronauts applied for NASA's space program, eclipsing a number that had been set nearly 40 years ago.
By Joshua Barajas
The Apollo 11 moon landing was one giant leap for mankind, but a string of conspiracy theories have since tried to ground the 1969 spaceflight as a staged production on a Hollywood backlot. The false claims range loud enough that…
By Vic Pasquantonio
More than 400 teachers from 40 different states and seven countries ventured to Texas for a three-day space conference sponsored by Space Center Houston, a nonprofit organization backed by the support of NASA’s Johnson Space Center.
Thirty years ago, the Space Shuttle Challenger exploded just after takeoff, a tragedy that was broadcast on live television. Nationwide excitement for the mission turned to horror over the crew of seven who died on board. Science correspondent Miles O'Brien…
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