kepler tagged posts

Physics behind Unusual Behavior of Stars’ Super Flares discovered

Physics behind unusual behavior of stars' super flares discovered
Modeled flare atmosphere and synthesized TESS light curves. Credit: The Astrophysical Journal (2023). DOI: 10.3847/1538-4357/ad077d

Our sun actively produces solar flares that can impact Earth, with the strongest flares having the capacity to cause blackouts and disrupt communications—potentially on a global scale. While solar flares can be powerful, they are insignificant compared to the thousands of “super flares” observed by NASA’s Kepler and TESS missions. “Super flares” are produced by stars that are 100–10,000 times brighter than those on the sun.

The physics are thought to be the same between solar flares and super flares: a sudden release of magnetic energy...

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Earth-size, Habitable-zone Planet found hidden in early NASA Kepler data

This artist’s concept shows what exoplanet Kepler-1649c could look like on its surface. The planet is the closest to Earth in size and temperature found yet in data from the Kepler space telescope. Credit: NASA/Ames Research Center/Daniel Rutter

While the star it orbits is much smaller than our Sun, it gets about 75 percent of the sunlight Earth does. A team of transatlantic scientists, using reanalyzed data from NASA’s Kepler space telescope, has discovered an Earth-size exoplanet orbiting in its star’s habitable zone, the area around a star where a rocky planet could support liquid water.

Scientists discovered this planet, called Kepler-1649c, when looking through old observations from Kepler, which the agency retired in 2018...

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How many Earth-like Planets are around Sun-like Stars?

Exoplanets concept illustration (stock image).
Credit: © Dimitar Marinov / Adobe Stock

A new study provides the most accurate estimate of the frequency that planets that are similar to Earth in size and in distance from their host star occur around stars similar to our Sun. Knowing the rate that these potentially habitable planets occur will be important for designing future astronomical missions to characterize nearby rocky planets around sun-like stars that could support life.

Thousands of planets have been discovered by NASA’s Kepler space telescope...

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Astronomers discover 3rd planet in the Kepler-47 Circumbinary system


This is an artistic rendition of the Kepler-47 circumbinary planet system. The three planets with the large middle planet being the newly discovered Kepler47d.
Credit: NASA/JPLCaltech/T. Pyle

Astronomers have discovered a third planet in the Kepler-47 system, securing the system’s title as the most interesting of the binary-star worlds. Using data from NASA’s Kepler space telescope, a team of researchers, led by astronomers at San Diego State University, detected the new Neptune-to-Saturn-size planet orbiting between two previously known planets.

With its three planets orbiting two suns, Kepler-47 is the only known multi-planet circumbinary system. Circumbinary planets are those that orbit two stars.

The planets in the Kepler-47 system were detected via the “transit method...

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