Scientists describe a gravity telescope that could image exoplanets AAS_Publishing
"We want to take pictures of planets that are orbiting other stars that are as good as the pictures we can make of planets in our own solar system," said Bruce Macintosh, a physics professor at in the School of Humanities and Sciences at Stanford and deputy director of the Kavli Institute for Particle Astrophysics and Cosmology ."With this technology, we hope to take a picture of a planet 100 light-years away that has the same impact as Apollo 8's picture of Earth.
But it wasn't until 2020 that the imaging technique was explored in detail in order to observe planets. Slava Turyshev of California Institute of Technology's Jet Propulsion Laboratory described a technique where a space-based telescope could use rockets to scan around the rays of light from a planet to reconstruct a clear picture, but the technique would require a lot of fuel and time.
Madurowicz demonstrated his work by using images of the rotating Earth taken by the satellite DSCOVR that sits between Earth and the sun. Then, he used a computer model to see what Earth would look like peering through the warping effects of the sun's gravity. By applying his algorithm to the observations, Madurowicz was able to recover the images of Earth and prove that his calculations were correct.
"By unbending the light bent by the sun, an image can be created far beyond that of an ordinary telescope," Madurowicz said."So, the scientific potential is an untapped mystery because it's opening this new observing capability that doesn't yet exist."at the resolution the scientists describe, we would need a telescope 20 times wider than the Earth. By using the sun's gravity like a telescope, scientists can exploit this as a massive natural lens.
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