Scientists have measured that Jupiter releases more internal heat than it absorbs from the Sun, based on observations of its structure, rotation, and atmospheric behavior.

A team of physicists has discovered a surprisingly simple way to build nuclear clocks using tiny amounts of rare thorium. By ...

In a rebuke to the president, the Senate narrowly agreed to bring up a War Powers Act resolution for a vote next week. The measure would require Mr. Trump to seek congressional authorization for ...

Every day in history has its own set of stories, extending well beyond what happens in that one day. It may be days ...

The team has estimated that the planet is about 22 percent the mass of Jupiter, so roughly a Saturn-sized world. It is ...