2024年10月28日 · Exoplanet Exploration at JPL JPL is at the forefront of a burgeoning and fascinating endeavor — developing technologies to hunt for exoplanets, which are planets beyond our solar system. Breakthroughs in the 1990s by the world science community confirmed that our Sun, the star at the center of our solar system, is not the only star that has ...

2024年5月8日 · “Webb is pushing the frontiers of exoplanet characterization to rocky planets,” Hu said. “It is truly enabling a new type of science.” Super-Hot Super-Earth 55 Cancri e. 55 Cancri e, also known as Janssen, is one of five known planets orbiting the Sun-like star 55 Cancri, in the constellation Cancer. With a diameter nearly twice that of ...

2024年10月11日 · Twenty years after the first discovery of a planet orbiting another sun-like star, scientists have discovered the most Earth-like exoplanet ever: Kepler-452b. Located in the habitable zone of a star very much like our sun, Kepler …

2024年1月31日 · But if scientists were trying to obtain images of an Earth-like planet in another solar system (same size, same distance from a star similar to our Sun), they wouldn’t be able to see the planet in the star’s glare, even with the best coronagraphs and most powerful telescopes operating today.

2023年10月16日 · Researchers using NASA’s James Webb Space Telescope have detected evidence for quartz nanocrystals in the high-altitude clouds of WASP-17 b, a hot Jupiter exoplanet 1,300 light-years from Earth. The detection, which was uniquely possible with Webb’s MIRI (Mid-Infrared Instrument), marks the first time that silica (SiO2) particles have been ...

2024年7月24日 · Epsilon Indi Ab is the 12th closest exoplanet to Earth known to date and the closest planet more massive than Jupiter. The science team chose to study Eps Ind A because the system showed hints of a possible planetary body using a technique called radial velocity , which measures the back-and-forth wobbles of the host star along our line of sight.

2023年11月15日 · “Scientists have now confirmed the detection of over 5,000 exoplanets, but there are fewer planets than expected with a diameter between 1.5 and 2 times that of Earth,” said Caltech/IPAC research scientist Jessie Christiansen, science lead for the NASA Exoplanet Archive and lead author of the new study in The Astronomical Journal.

2022年1月13日 · Exoplanet Analogs Age often brings stability in humans, and that appears to be true for cosmic objects as well. Johanna Vos, an astrophysicist at the American Museum of Natural History in New York, will discuss a Spitzer survey published in the Astrophysical Journal that found higher variability in the weather on young brown dwarfs compared to ...

2024年4月30日 · WASP-43 b is a “hot Jupiter” type of exoplanet: similar in size to Jupiter, made primarily of hydrogen and helium, and much hotter than any of the giant planets in our own solar system. Although its star is smaller and cooler than the Sun, WASP-43 b orbits at a distance of just 1.3 million miles — less than 1/25th the distance between ...

2014年9月24日 · Astronomers using data from three of NASA's space telescopes -- Hubble, Spitzer and Kepler -- have discovered clear skies and steamy water vapor on a gaseous exoplanet. Astronomers using data from three of NASA's space telescopes -- Hubble, Spitzer and Kepler -- have discovered clear skies and steamy water vapor on a gaseous planet outside our ...