Astronomers thought giant stars were reponsible for flooding the early system with a radioative isotope — but the Sun itself might have made it.
The latest data release from a survey of 31 million galaxies reveals that our universe is even smoother than we thought it was.
Travel to the ends of the Earth to experience a special — but risky — total solar eclipse in Antarctica.
The Sloan Digital Sky Survey has released a new map of the universe — and the results confirm ongoing tension over the expansion rate of the universe.
Astronomers and citizen scientists have found two would-be stars lacking heavy elements. They’re most likely ancient survivors of our galaxy’s earliest days.
Most lunar scientists today think that the Moon formed after a Mars-size body hit the still-forming Earth, launching enough material into orbit to form our satellite. But there is still lively debate about the age of the Moon, and its evolution after it formed. A Mars-size body smashed into Earth…
The first images to be released from the European Space Agency’s Sun-imaging spacecraft show intriguing “campfires” that could help explain a solar mystery.