While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

A rare meteorite has revealed evidence of a massive lost world that once orbited the young Sun before being destroyed in a catastrophic collision. The discovery suggests some early planets formed from ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system. It’s an unprecedented ...

Science fiction promises faster-than-light travel and easy journeys to other stars, but physics may have built a prison ...

On a clear night, it dominates the sky, bright enough to cast shadows and large enough for dark patches and surface features ...

The solar system is embedded within the expanding solar atmosphere, i.e., the solar wind, a tenuous plasma, consisting mostly of protons and electrons, continuously emitted by the Sun. Each body that ...

Our solar system may have hosted up to six giant planets in its first hundred million years, a new study suggests. The ...

Interstellar comet 3I/ATLAS, the third object ever confirmed to have originated beyond our solar system, is heading back into ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

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Estimating ages of specific events is one of the most difficult problems in astrophysics. While we have a precise (and probably accurate) age for the solar system, we do not have precise ages for each ...

Approximately 4.5 billion years ago, a cold cloud of gas and dust buried deep in one of the Milky Way galaxy’s spiral arms started to collapse. From there, gravity worked its magic. The cloud began to ...