What do many baked goods and the planet Mercury have in common? They shrink as they cool. Evidence suggests that since it formed about 4.5 billion years ago, Mercury has

Warm mid-August summer nights offer prime conditions for spotting three magnificent star clusters visible to northern-hemisphere skywatchers in the coming months. Star clusters are gravitationally bound groups of stars that

Mercury may be small, but it’s mighty, zipping around the Sun faster than any other planet. And despite being so close to the sun, it’s not the hottest planet. Venus

This article was originally published at The Conversation. The publication contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. While the dangerous effects of climate change continue to worsen,

NASA and Google are collaborating to test an AI-powered medical assistant designed to support astronauts on long-duration missions, where communication delays with Earth make real-time medical consultations impossible. NASA, which