Over the quarter century I’ve been writing this column, I've been flabbergasted by the advances in telescopes for backyard ...

Scientists uncovered evidence that astrophysics models of massive stars and supernovae are inconsistent with observational ...

The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...

New observations suggest that the universe’s oldest galaxies are brighter than expected. Here's why this may be a big deal.

I remember the first time I realized it's possible to see Jupiter without a telescope. I'd often spot a star in the sky at night and say ... long and twice as wide as the full moon, according to ...