The bold question-askers at What If explore what could happen if a quasar entered our solar system. Pentagon removes key protections for civilian workers, moves to fire with ‘speed and conviction’ ...

About 4.6 billion years ago, a celestial cloud collapsed, paving the way for our solar system to form. Then, a nebula with strong gravitational pull took shape, kick-starting the birth of the sun. But ...

“The unexamined life is not worth living,” Socrates supposedly said. We all can look back to reflect on what we have done or thought about what we might have done instead. Bill Humphreys is someone ...

Operations at Munich’s airport were recently halted by drones. Several Danish airports, including Copenhagen’s, and a military air base where Denmark stations F-16s and F-35s, have been disrupted by ...

Interstellar object 3I/ATLAS is on the opposite side of the sun from Earth - but several spacecraft are in the perfect position to get a closer look. As 3I/ATLAS warps and grows the closer it gets to ...

The federal government shutdown has entered its second week, and already shortages of air traffic controllers have strained operations and disrupted flights at some U.S. airports. Reagan National ...

Astronomers believe they have uncovered evidence of a previously unknown ninth planet lurking in the not-too-distant reaches of the solar system. This hypothetical world, dubbed "Planet Y," could be ...

The Camera’s front-page article on Cool Nuclear Energy on Monday, Oct. 13, “Is nuclear power becoming cool in Colorado?” gave short shrift to Solar Energy. Our solar system’s star is a very reliable ...

A new analysis of our solar system’s interstellar interloper, 3I/ATLAS, reveals that it’s spewing huge amounts of water — and astronomers can’t immediately explain why. The object, which is widely ...

The planet is grappling with a “new reality” as it reaches the first in a series of catastrophic and potentially irreversible climate tipping points: the widespread death of coral reefs, according to ...

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a very different structure than comets in the solar system. Hydroxyl compounds ...