There might be many planets with water-rich atmospheres

An atmosphere is what makes life on Earth's surface possible, regulating our climate and sheltering us from damaging cosmic rays. But although telescopes have counted a growing number of rocky planets, scientists had thought ...

How fast is the universe expanding? Galaxies provide one answer.

Determining how rapidly the universe is expanding is key to understanding our cosmic fate, but with more precise data has come a conundrum: Estimates based on measurements within our local universe don't agree with extrapolations ...

New warm-Neptune exoplanet discovered

By analyzing archival radial velocity data, astronomers have detected a new warm-Neptune alien world. The newfound exoplanet, designated HD 183579b (or TOI-1055b) is about three and a half times larger and almost 20 times ...

Six space missions to look forward to in 2021

Space exploration achieved several notable firsts in 2020 despite the COVID-19 pandemic, including commercial human spaceflight and returning samples of an asteroid to Earth.

Supersonic winds, rocky rains forecasted on lava planet

Among the most extreme planets discovered beyond the edges of our solar system are lava planets: fiery hot worlds that circle so close to their host star that some regions are likely oceans of molten lava. According to scientists ...

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