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Artist’s impression of the exoplanet HAT-P-11b with its extended helium atmosphere blown away by the star, an orange dwarf star smaller, but more active, than the Sun.© Denis Bajram

An exoplanet inflated like a balloon

Helium is the second most plentiful component in the Universe. Anticipated since 2000 as extraordinary compared to other conceivable tracers of the climates of...
An artist’s concept of a super-Earth in the habitable zone of a star smaller and cooler than the sun. Such large planets could have long-lasting magma oceans that generate magnetic fields capable of protecting incipient life. The graphic was created to model Kepler-62f, one of many exoplanets discovered by NASA’s now inoperable Kepler space telescope. (Image courtesy of NASA Ames/JPL-Caltech/Tim Pyle)

What magnetic fields can tell us about life on other planets?

Earth has a magnetic field – it’s what makes compasses align north-south and lets us navigate the oceans. It also protects the atmosphere, and...
Artwork of exoplanet HR 8799 c Credit: W. M. Keck Observatory/Adam Makarenko

Exoplanet stepping stones

Astronomers at the Caltech have obtained some of the best and the more robust data yet on the composition of a planet known as HR...
Direct Wircam image of 2MASS 0249 system taken wiht CFHT's infrared camera WIRCam. 2MASS 0249c is located 2000 astronomical units from the host brown dwarfs that are unresolved in this image. Credits: T. Dupuy, M. Liu

Astronomers discovered a famous exoplanet’s Doppelgänger

In a new discovery, astronomers have imaged another planet, and it shows up about identical to a standout amongst other studied gas-giant planets. However, this...
Scientists Produced Best Estimate of Earth’s Elemental Composition

Scientists Produced Best Estimate of Earth’s Elemental Composition

The Solar System is emerged due to the collision between a molecular cloud of hydrogen gas and dust under its own gravity. Thus, it...

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