News tagged with dwarf planets

15 new planets confirmed around cool dwarf stars

A research team led by Teruyuki Hirano of Tokyo Institute of Technology's Department of Earth and Planetary Sciences has validated 15 exoplanets orbiting red dwarf systems. One of the brightest red dwarfs, K2-155 that is ...

dateMar 12, 2018 in Astronomy
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When do aging brown dwarfs sweep the clouds away?

Brown dwarfs, the larger cousins of giant planets, undergo atmospheric changes from cloudy to cloudless as they age and cool. A team of astronomers led by Carnegie's Jonathan Gagné measured for the first time the temperature ...

dateFeb 27, 2018 in Astronomy
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Scientist proposes new definition of a planet

Pluto hogs the spotlight in the continuing scientific debate over what is and what is not a planet, but a less conspicuous argument rages on about the planetary status of massive objects outside our solar system. The dispute ...

dateJan 23, 2018 in Astronomy
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Hubble finds substellar objects in the Orion Nebula

Using NASA's Hubble Space Telescope to peer deep into the vast stellar nursery called the Orion Nebula, astronomers searched for small, faint bodies. What they found was the largest population yet of brown dwarfs—objects ...

dateJan 11, 2018 in Astronomy
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Image: Kwanzaa tholus on Ceres

What is a tholus? A tholus is a type of small mountain. These images show such a feature on dwarf planet Ceres called Kwanzaa Tholus. Kwanzaa, meaning "first fruits" in Swahili, is an African-American festival based on ancient ...

dateDec 28, 2017 in Space Exploration
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Orbital mayhem around a red dwarf

In the collective imagination, planets of a solar system all circle in the equatorial plane of their star. The star also spins, and its spin axis is aligned with the spin axes of the planetary orbits, giving the impression ...

dateDec 18, 2017 in Astronomy
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