Goal is a winged vessel capable of cost-effective missions
Scientists involved in the discovery now seek to learn how many more Manx comets exist
Vu Xuan Linh moves one step closer to become first humans on the Red Planet
At least 31 people were killed and more than 270 wounded in the blasts, which were claimed by the Islamic State militant...
Top photos from the past week.
NASA said that after retiring, Kelly, 52, will still work on ongoing research related to his time in space.
To explore beyond the moon, NASA will need to fortify the human body.
Views of the solar system, as astronomers announce there may be a ninth planet about 10 times bigger than Earth and...
Which celebrities have the most followers on Twitter?
"Revenant" star Leonardo DiCaprio won best drama actor and Alejandro Inarritu was named best director.
The most searched topics in the U.S. this year, according to Google.