A decade ago, scientists at the European Space Agency (ESA) had just wrapped up the yearslong process of building a ...

Citizen scientists can contribute to the project and have helped find more than 5,000 comets since the project was founded in 1995, according to NASA. Scientists called this comet a true "sungrazer" ...

The comet reached its perihelion on Monday at 7:30 a.m. ET and was completely vaporized after passing within 1% of Earth’s distance from the sun, less than 1 million miles (1.5 million ...

Potentially dangerous comets could be spotted many years in advance by following the meteoroid trails they leave near Earth, new research shows. Comets that rarely swing past the sun could ram ...

"Hale-Bopp has been a favorite of comet studies in part because it was one of the brightest comets seen." Comets — those small, icy objects orbiting the sun — act like floating time capsules ...

The comet reportedly reached perihelion at 7:30 a.m. ET, two days later than anticipated. "C/2024 S1 is a true sungrazer," NASA wrote. "It passed within 1% of Earth’s distance to the Sun ...

ESA/NASA’s Sun-watching SOHO spacecraft spied comet C/2024 S1 ATLAS (entering from bottom right) as it darted toward the Sun. The comet reached its perihelion, or closest approach of the Sun ...

TOKYO -- About one month has passed since Comet Tsuchinshan-ATLAS made its closest approach to Earth on Oct. 13 and showed us its beautifully extended tail. The comet is no longer visible to the ...

Earth’s orbit around the Sun is not circular, but an ellipse that is slightly elongated with an eccentricity of 0.017. (An eccentricity of 0 is a circle, while the dwarf planet Pluto has a ...