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If you close your eyes and imagine a planetary system orbiting a distant star, what do you see? For most people, such thinking gives rise to systems that mirror the Solar System: planets orbiting their parent stars in nearly circular orbits – rocky planets are closer together, and giants like Jupiter in the icy depths. However, the more we study the cosmos, the more we begin to realize that planetary systems like ours may be more the exception than the rule. Imagine a system with a single gas planet, slightly larger than Saturn, tracing the surface of its parent star in a very fast orbit. It is extremely hot and glows a dull red, baked in stellar radiation. Then imagine another, more distant giant planet, larger than Jupiter, moving on a distant and highly elongated orbit that makes it look more like a comet than a traditional planet. It doesn’t sound like home, does it? But that’s what we found. Introducing planetary system HD83443 The story of the HD83443 system begins in the late

If you close your eyes and imagine a planetary system orbiting a distant star, what do you see? For most people, such thinking gives rise to systems that mirror the Solar System: planets orbiting their parent stars in nearly circular orbits – rocky planets are closer together, and giants like Jupiter in the icy depths. However, the more we study the cosmos, the more we begin to realize that planetary systems like ours may be more the exception than the rule. Imagine a system with a single gas planet, slightly larger than Saturn, tracing the surface of its parent star in a very fast orbit. It is extremely hot and glows a dull red, baked in stellar radiation. Then imagine another, more distant giant planet, larger than Jupiter, moving on a distant and highly elongated orbit that makes it look more like a comet than a traditional planet. It doesn’t sound like home, does it? But that’s what we found. Introducing planetary system HD83443 The story of the HD83443 system begins in the late

If you close your eyes and imagine a planetary system orbiting a distant star, what do you see? For most people, such thinking gives rise to systems that mirror the Solar System: planets orbiting their host stars in nearly circular orbits – rocky planets are closer, and giants like Jupiter in the icy depths. However, the more we study the cosmos, the more we begin to realize that planetary systems like ours may be more the exception than the rule. Imagine a system with one gas planet, slightly larger than Saturn, tracing the surface of its parent star in a very fast orbit. It is extremely hot and glows a dull red, baked in stellar radiation. Then imagine another, more distant giant planet, larger than Jupiter, moving on a distant and highly elongated orbit that makes it look more like a comet than a traditional planet. It doesn’t sound like home, does it? But that’s what we found. Introducing planetary system HD83443 The story of the HD83443 system begins in the late 20th century, wh

A newly discovered star is so close to the center of our galaxy’s supermassive black hole that it completes an orbit in just four years. It is the shortest orbit for any of the stars around Sagittarius A*. This is an oval-shaped journey around a black hole that takes the star to an orbital speed of more than 2.5 percent of the speed of light. This discovery adds exciting new information about the strange dynamics of the center of the Milky Way. Although the center of our galaxy is quite quiet compared to other galaxies, the environment around Sgr A* is an extreme place. Black holes are monsters, which have a mass about 4 million times the mass of the Sun. Before astronomers confirmed its existence with live images, scientists deduced its existence and calculated its mass based on the star locked in orbit around Sgr A*. The star, called S2, is just one of a group of stars known as S-stars, which follow a long, sharp elliptical orbit around Sgr A*, with a black hole at one end of the