Two million years ago, an encounter with a cold cloud of gas and dust could have caused our planet's "protective giant bubble" to draw back, potentially cooling our planet, new research claims. When ...

Satellite mega constellations promise faster connectivity but threaten astronomy, as thousands of satellites brighten skies, ...

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Michael Bakich selected visually stunning celestial objects observed through telescopes, including Omega Centauri, the 2010 total solar eclipse over Easter Island, Thor's Helmet nebula, and the Jewel ...

Historical observations of the Moon's motion, dating back to ancient civilizations, played a crucial role in the development of timekeeping and calendar systems. The Moon's orbital cycle can be ...

Our planet had a "second moon" for a hot minute in 2024. This gave space entrepreneurs a bright idea. Almost a year ago, the space science community watched as an asteroid entered Earth's orbit and ...

Astronomers have discovered an Earth-size planet that is showered with so much radiation, its atmosphere eroded away long ago, leaving it bare. Life as we know it can't exist on this blistering world, ...