These 6 major spaceport launch sites helped open the space age. Now, satellites orbiting Earth can look back at the very gateways that sent them there.
Circinus the Drawing Compass is a dim constellation located next to the 3rd brightest star in the sky, Alpha Centauri. It looks like a pair of tweezers.
Scientists have solved the mystery of how a gas giant planet survived the death of its star. The planet migrated inward after the star's red giant phase.
The Milky Way's arms might be farther away than we thought, meaning our galaxy is likely larger than previously believed. Here's how they made the measurements.
Scientists think a passing star 2.5 million years ago might have sent a wave of comets in toward the sun. Some of those comets could still be arriving today.
The Tunguska explosion on June 30, 1908, is the largest asteroid impact in recorded history. Researchers are preparing for future Tunguska-sized events.
The H5N1 bird flu has reached Australia, completing its spread to all 7 continents and raising concerns for the nation’s birds, wildlife and livestock.
Kelly Kizer Whitt writes and edits some of the most fascinating stories at EarthSky.org. She's been writing about science, with a focus on astronomy, for decades. She began her career at Astronomy Magazine and made regular contributions to other outlets, including AstronomyToday and the Sierra Club. She has nine published books, including a children's picture book, Solar System Forecast, and a young adult dystopian novel, A Different Sky.