Extra-solar planets are among the most thrilling discoveries of our age. Just today, scientists using Spitzer space telescope data announced the first detection of infrared light from an extra-solar ...

Astronomers scouring nearby stars have found two planets that mirror Neptune in size, making them by far the smallest found outside the solar system. The finds, one by scientists at the University of ...

Did you know our solar system might have had an extra planet? Scientists believe a mysterious ninth planet once existed but got kicked out long ago! This "lost" planet could have been tossed into deep ...

Artist's concept of a hypothetical planet orbiting far from the Sun. Almost a decade after astronomers proposed the existence of Planet 9, an unseen extra planet in the distant reaches of the solar ...

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida Tech graduate, she leaves with not only a dual degree in planetary science ...

AAPS, and three low-mass (ie Saturnian- or sub-Saturnian-mass planets). The multiple planet systems include two planets detected around the star mu Ara (in the constellation of Ara "The Altar"). The ...