Earth’s sky is only one version of a cosmic phenomenon. Other planets offer skies filled with strange colors, thick ...

The James Webb Space Telescope is turning distant exoplanets from anonymous dots of light into worlds with weather, chemistry, and sometimes even hints of clouds. By dissecting the faint starlight ...

In the long and hallowed history of flight, engineers are writing a new chapter. It’s a chapter that involves skies more distant than the stratosphere of our own world. Space flight designers today ...

Every once in a while, you may look up towards the Sun and see strange bright lights on either side of it. Or perhaps you’ll be sitting in an aircraft, looking out the window at its shadow and see a ...

ST. GEORGE, Utah — Anyone looking up to the skies over southern Utah early Monday evening might have had cause to worry about the alien invasion that has been foretold in dozens of science fiction ...