NASA scientist John Grunsfeld gives a preview of the Mars Curiosity mission, from the landing's 'seven minutes of terror' to the plans for the exploration ahead.

Elon Musk on the Dragon launch, traveling to Mars, and--his other hobby--electric cars.

Two NASA astronauts aboard the International Space Station talk about life and the view from 220 miles above Earth.

Learn how astronaut and astrophysicist John Grunsfeld leads NASA's investigations of Earth and beyond. This astronaut flown the space shuttle five times, and performed eight spacewalks to service the Hubble telescope. [23:32]

Voyager 1 is leaving the solar system, making it the first spacecraft to enter interstellar space.

A quick look at the 3 billion-mile, decade-long journey of a little space probe called New Horizons from Earth to Pluto. [1:00]

The Hubble Space Telescope has been staring out into deep space since 1990. In celebration of its 25th Anniversary, this is a parody of Iggy Azalea's song "Trouble." [1:20]