Astronomers traced a mysterious 'scar' of ionized gas around the solar system to two stars that had a close flyby with our ...

A mysterious cosmic scar reveals two massive stars that passed near our solar system millions of years ago, energizing nearby ...

Among the more puzzling cosmic phenomena discovered over the past few decades are brief and very bright flashes of blue and ...

A mysterious excess of far-ultraviolet light seen across the Milky Way could come from the annihilation of clumpy dark matter ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

The NWS notes that tule fog, a special kind of radiation fog, occurs each winter in the Central Valley of California. The ...

Mysterious Bright Flashes in the Night Sky Baffle Astronomers Celestial transients shine furiously and briefly. Astronomers ...

Astronomers are a step closer to cracking one of the secrets of dark energy—the mysterious force believed to be causing the universe's accelerated expansion.