Seeing Exoplanets Like Never Before
The planets that the astronomers are seeing are 128 light years away. They’re exoplanets, meaning they orbit around a different sun than our Earth does.
“It’s nothing like our solar system in that the star is more massive and the planets are larger,” said Lynne Hillenbrand, an astronomer at Caltech’s Palomar Observatory in California.
The star is called HR 8799 and until now the glare from this massive star made it impossible to see the planets. But now, astronomers have developed a new telescope imaging system that is able to find never-before-seen planets.
“This technology aims to suppress the light from the star and reveal the very faint companions of the stars that are potentially planetary mass,” Hillenbrand said.
Astronomers were able to find four planets orbiting this sun with the new technology. Every second, it makes millions of tiny adjustments to two six-inch mirrors in the system.
“The adaptive-optic system uses rapid correction of a mirror to exactly compensate for the distortions that are induced by the Earth’s atmosphere,” said Richard Dekany, an astronomer at Caltech’s Palomar Observatory.
These adjustments deliver clear, undistorted images to the telescope on the ground. The system also blocks light from surrounding stars, allowing them to see the planets. From their observations, scientists have learned this solar system is young and the planets are toxic and too hot to sustain life.
“By looking into these four exoplanets it will give us some insight into how these solar systems were formed and whether our solar system formed in a similar or a different way,” said Dekany.
This technology is allowing us to find planets and look for life outside our solar system.
Marsha Lewis, ISTV Contributing Producer
Inside Science TV (ISTV)
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