Tracking the rotation speed of solid planets, like the Earth and Mars, is a relatively simple task: Just measure the time it takes for a surface feature to roll into view again. But giant gas planets ...

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Astronomers have found that the rotational profile of a nearby star, V889 Herculis, differs considerably from that of the Sun. The observation provides insights into the fundamental stellar ...

CAMBRIDGE, Mass – As astronomers become more adept at searching for, and finding, planets orbiting other stars, it’s natural to wonder if anybody is looking back. Now, a team of astronomers that ...

SANTA CRUZ — Xi Zhang, a professor of Earth and planetary science at UC Santa Cruz, has discovered that an exoplanet classed ...

A comet's orbital period is fundamentally independent of its own mass, relying instead on orbital dimensions and the central star's mass. However, outgassing—the escape of gas and dust from a ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. The Jupiter time-lapse was captured throughout the night of September 7 and 8, the ...

For nearly a billion years, Earth’s rotation stopped slowing down. Locked in a rare cosmic balance, the planet’s day remained fixed at 19 hours, stalling the normal progression toward longer days.