The original "Pale Blue Dot" is a famous image of Earth taken from a distance of around 3.7 billion miles by the Voyager 1 spacecraft.
Astronauts Drew Feustel and Rocky Arnold will spend more than six hours outside of the ISS Wednesday.
Where do they come from? How do they work? And of course, will they help us find aliens?
“We are doing both the moon and Mars, in tandem, and the missions are supportive of each other.”
“It’s been 30 years of frustration and 10 years of getting ready to go to Mars.”
Kilopower will be capable of producing enough power to run several average households continuously for 10 years.
Elon Musk on NASA: "As soon as you don’t have any competition, the sense of urgency goes away."
The mission ended in 2003, but a bunch of its data had never been studied closely.
NASA says some of the rover's instruments will still find their way to the Moon.
The lander does use essentially the same shield, but its equipment has been double-checked.
TESS stands for Transiting Exoplanet Survey Satellite, and its mission is to identify planets orbiting the brightest stars in our neighborhood of the universe.
The Great Red Spot is 1.3 times the size of the Earth.
Wall-E and Eva were nicknamed in honor of characters from the Pixar film, thanks to the scene in which Wall-E uses a fire extinguisher to dance through space, which mimics how these two real spacecraft will move.
TESS will scour the skies for signs of undiscovered worlds.
Scientists are excited about the prospect the mission holds for new discoveries, but if you're just learning about the mission now, here's what you need to know.