Scientists using data from the European Space Agency’s Gaia mission have made a groundbreaking discovery: a massive exoplanet ...

Do the periods of comets decrease because they lose mass every time they get near the Sun? Robert Bailey Conover, Wisconsin Great question! Assuming you're referring specifically to the orbital period ...

DARPA is testing new in-space manufacturing techniques that could enable the construction of massive, mass-efficient ...

With an assist from the NEID spectrograph, a team of astronomers have confirmed the existence of exoplanet Gaia-4b—one of the ...

So, if some of a comet’s mass suddenly disappeared one day, its orbital period should remain unchanged. In the real world, however, mass does not simply disappear — it has to go somewhere.