Ultima Thule, the most-distant object ever visited by a spacecraft, is revealing our solar system’s deepest history—and, just maybe, revolutionizing planetary science
Michael Mayor and grad student Didier Queloz were the first astronomers to identify an alien world as it circled a sunlike star
A new generation of physicists hope to succeed where Einstein failed
Reflections on science truth in an asbestos trial
The SOHO spacecraft finds intricate plasma flows coursing through the sun
Radio eyes witness the mass births and deaths of stars
A topsy-turvy earth may have triggered an evolutionary big bang
Did a blizzard of icy comets give the earth its oceans?
Fossil finds heat up the debate over the origins of our feathered friends
Could the first planet discovered around a sunlike star be a mirage?
Are the satellites of giant planets a place to look for life?
Coof low-budget astronomymputer power opens a new era
A quick-seeing satellite catches cosmic cannibals in the act
An international conference dares to ask, 'Is it time for the world to slow down?'
A satellite observes the lightning-fast flickerings of cosmic objects
An unusual concentration of science fact graces the silver screen
The controversy over Martian life is just beginning
Researchers nudge closer to the goal of quantum computing
A cyberspace Renaissance man reveals his current thoughts on the World Wide Web, virtual reality, and other silicon dreams