Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals, formed in the first million years after the Sun was born. Others, including the ...

WASP-94A b, a hot Jupiter nearly 700 light-years away, builds mineral cloud cover each morning and loses it by evening. This ...

There are more moons than planets in our solar system. Yet convincing evidence of moons among the nearly 5,000 known extrasolar planets has been scant … until now. This image shows the PDS 70 ...

While Jupiter is the dominant planet in the night sky now, keep in mind that with each passing day, Mars is getting closer to Earth. It is sometimes difficult to rouse one's self out of bed in the ...