What are hot Jupiters?

When astronomers first discovered other planets, they were completely unlike anything we've ever found in the Solar System. These first planets were known as "hot Jupiters", because they're giant planets – even more massive ...

Exoplanet orbits its star every 18 hours

In the past decade, thousands of planets have been discovered beyond our solar system. These planets have provided astronomers with the opportunity to study planetary systems that defy our preconcieved notions. This includes ...

'Hot Jupiters' provoke their own host suns to wobble

Blame the "hot Jupiters." These large, gaseous exoplanets (planets outside our solar system) can make their suns wobble when they wend their way through their own solar systems to snuggle up against their suns, according ...

A 14-inch spacecraft delivers new details about 'hot Jupiters'

A spacecraft the size of a cereal box has collected precise measurements of the atmospheres of large and puffy planets called "hot Jupiters." The findings, led by a team from the University of Colorado Boulder, could help ...

Cloudy nights, sunny days on distant hot Jupiters

The weather forecast for faraway, blistering planets called "hot Jupiters" might go something like this: Cloudy nights and sunny days, with a high of 2,400 degrees Fahrenheit (about 1,300 degrees Celsius, or 1,600 Kelvin).

New clues about how hot Jupiters form

Since the first hot Jupiter was discovered in 1995, astronomers have been trying to figure out how the searing-hot exoplanets formed and arrived in their extreme orbits. Johns Hopkins University astronomers have found a way ...

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