A robotic explorer named Juno has launched and is on its way to Jupiter.
Deep ocean searchers have found what some are calling a UFO on the ocean floor. But are there other explanations?
During a three-week trip to South Africa, Nicole Gugliucci helped to build an exciting astronomical experiment in the desert.
Identifying the chemical elements in the stars could have a fascinating spin-off for cancer treatments.
It's looking more and more likely that the explanation for the so-called "Pioneer anomaly" is not due to new physics, but to far more mundane factors.
Radio astronomers have longed for a telescope with a full square kilometer of collecting area. Now, as it comes closer to reality, they are trying to decide where to put it.
Once again, videographer Noe Castillo has captured space shuttle history through his camera lens.
Pluto may have been demoted to dwarf planet status, but it's queen bee to a clutch of moons that now number four.
Could the discovery of two neighboring brown dwarfs indicate that more of these ultracool "failed stars" are nearby?
It may not be Stonehenge, but Wednesday will see a different kind of solar alignment over the New York City skyline.