As multi-million dollar spacecraft crawl across our solar system, they could bring smaller passengers with them -- these tiny vehicles are called CubeSats and they've so far done a great job colonizing low Earth orbit.
NASA has already begun trying to figure out where its first Mars astronauts should touch down, about two decades before the pioneers are scheduled to launch toward the Red Planet.
Magnesium and iron measurements suggest the hourly meteor rate overhead on Mars must have been tens of thousands of shooting stars per hour for hours.
Astronomers may have discovered an exoplanet that has found the elixir to planetary youth, knocking billions of years off its age.
From its orbital perch 2,700 miles above Ceres, NASA's Dawn spacecraft returned new images of the dwarf planet showing more even more small bright spots inside a 55-mile crater.
The pictures coming back from NASA’s Pluto-bound New Horizons spacecraft are still fuzzy, but they reveal a startling fact about the unexplored, icy world: it has a different color than its co-orbiting partner, Charon.
Four out of the five moons of Pluto have been discovered in the last ten years -- two of them after the New Horizon's spacecraft began its 9-and-half-year journey to the dwarf planet. Could there be more uncharted moons and hidden dangers lurking?
When NASA’s InSight lander settles itself on the surface of Mars next year, a pair of tiny experimental satellites will be nearby to relay the action -- in real time -- back to Earth.
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