Solar Gravity Telescope Could Directly Image Exoplanetary Atmospheres astronomy space science
, a duo of astronomers from the Kavli Institute for Particle Astrophysics and Cosmology at Stanford University described a way to manipulate solar gravitational lensing to view extrasolar planets. By positioning a space telescope, the Sun, and an exoplanet in a line with the Sun in the middle, they could use the solar gravitational field to magnify light from the exoplanet as it passes by.Gravitational lensing wasn’t experimentally observed until 1919 during a solar eclipse.
Building on that work, Kavli Institute Ph.D. student Alexander Madurowicz and Professor Bruce Macintosh invented a new method that can reconstruct a planet’s surface from a single image taken looking directly at the Sun. Then, they used a computer model to see what Earth would look like peering through the warping effects of the Sun’s gravity.
“So, the scientific potential is an untapped mystery because it’s opening this new observing capability that doesn’t yet exist.” In order for this to be adopted, astronomers will need faster spacecraft because, with current technology, it could take 100 years to travel to the lens.
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