14.04.2023 20:00 Uhr, Quelle: Engadget

Researchers use novel method to find a distant exoplanet

Astronomers have discovered a new exoplanet — but this time, the way they found it may be as significant as the discovery itself. Researchers used a breakthrough combination of indirect and direct planetary detection to locate the distant world known as HIP 99770 b. It could inch us closer to finding Earth-like exoplanets among our (distantly) neighboring stars.Direct imaging is what most casual observers would expect to lie at the heart of exoplanet hunting: using powerful telescopes with advanced optics to capture images of distant planetary bodies. However, direct imaging is most effective for planets orbiting far from their stars; an exoplanet closer to its sun is usually obscured by the star’s bright light, making it difficult to detect or image. (When they’re farther away, there’s greater contrast between the exoplanet’s and the star’s light.)Meanwhile, indirect imaging (precision astrometry) looks for stars that appear to “wobble,” meaning their gravity m

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