Related topics: nasa · spacecraft · solar system · earth · asteroid

Newly discovered comet is likely interstellar visitor

A newly discovered comet has excited the astronomical community this week because it appears to have originated from outside the solar system. The object—designated C/2019 Q4 (Borisov) - was discovered on Aug. 30, 2019, ...

All comets in the solar system might come from the same place

All comets might share their place of birth, new research says. For the first time ever, astronomer Christian Eistrup applied chemical models to fourteen well-known comets, surprisingly finding a clear pattern. His publication ...

Image: Small object spotted orbiting 67P/Churyumov-Gerasimenko

Last week marked five years since ESA's Rosetta probe arrived at its target, a comet named 67P/Churyumov-Gerasimenko (or 67P/C-G). Tomorrow, 13 August, it will be four years since the comet, escorted by Rosetta, reached its ...

Did comet impacts jump-start life on Earth?

Comets screaming through the atmosphere of early Earth at tens of thousands of miles per hour likely contained measurable amounts of protein-forming amino acids. Upon impact, these amino acids self-assembled into significantly ...

Space physicists send instrument to target comets

Space physicists at Umeå University, Sweden, develop measuring instruments for the spaceship Comet Interceptor. The vessel has been selected to be part of the European Space Agency's ESA program to target comets that have ...

ESA's new mission to intercept a comet

"Comet Interceptor" has been selected as ESA's new fast-class mission in its Cosmic Vision Programme. Comprising three spacecraft, it will be the first to visit a truly pristine comet or other interstellar object that is ...

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Comet

A comet is a Small Solar System Body that orbits the Sun. When close enough to the Sun, a comet exhibits a visible coma (fuzzy "atmosphere"), and sometimes a tail, both because of the effects of solar radiation upon the comet's nucleus. Comet nuclei are themselves loose collections of ice, dust and small rocky particles, ranging from a few kilometers to tens of kilometers across.

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