Caltech Researchers Find Evidence of a Real Ninth Planet
2024年11月8日 · Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at an average ...
Planet 9: Inside the search for a hidden planet in our solar system …
2024年11月5日 · An artist's concept illustrates the theorized Planet Nine, which Batygin and Brown believe to be five to seven times the mass of Earth. A competing theory proposes the existence of a hidden Kuiper ...
Discovery Alert: With Six New Worlds, 5,500 Discovery Milestone …
2024年7月16日 · On Aug. 24, 2023, more than three decades after the first confirmation of planets beyond our own solar system, scientists announced the discovery of six new exoplanets, stretching that number to 5,502.
NASA’s Webb Confirms Its First Exoplanet
2023年1月11日 · Researchers confirmed an exoplanet, a planet that orbits another star, using NASA’s James Webb Space Telescope for the first time. Formally classified as LHS 475 b, the planet is almost exactly the same size as our own, clocking in at 99% of Earth’s diameter.
The evidence for an undiscovered ninth planet in our solar system
2024年3月1日 · We get a lot of exciting science news about new exoplanets routinely discovered by powerful space telescopes — the planets that orbit stars other than our own Sun. But you might be surprised to know that the search for a new planets in our own solar system is ongoing.
Webb Confirms Its First Exoplanet – Exoplanet Exploration: Planets ...
2023年1月11日 · Researchers confirmed an exoplanet, a planet that orbits another star, using NASA’s James Webb Space Telescope for the first time. Formally classified as LHS 475 b, the planet is almost exactly the same size as our own, clocking in at 99% of Earth’s diameter.
Here’s the James Webb telescope’s first direct image of an exoplanet
2022年9月2日 · Along with spying its first exoplanet, the James Webb telescope got its first direct spectrum of an object orbiting a star in another solar system.
NASA Planet Hunter Finds its 1st Earth-size Habitable-zone World
2020年1月7日 · NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet in its star’s habitable zone, the range of distances where conditions may be just right to allow the presence of liquid water on the surface.
Exoplanets - NASA Science
An exoplanet is any planet beyond our solar system. Most of them orbit other stars, but some free-floating exoplanets, called rogue planets, are untethered to any star. We’ve confirmed more than 5,600 exoplanets out of the billions that we believe exist.
Webb Discovers Methane, Carbon Dioxide in Atmosphere of K2-18 b
2023年9月11日 · A new investigation with NASA’s James Webb Space Telescope into K2-18 b, an exoplanet 8.6 times as massive as Earth, has revealed the presence of carbon-bearing molecules including methane and carbon dioxide.