Scientists have traditionally posited that the heliosphere , the huge bubble of charged particles that the sun blows around itself, has a rounded leading edge, where the solar system barrels through space, with a long tail streaming behind it. But the heliosphere's true shape is weirder and more complex, a recent study suggests — something akin to a deflated croissant.
It's tough to map out the heliosphere, because its closest edge is still a whopping 10 billion miles (16 billion kilometers) from Earth. Just two spacecraft, NASA's Voyager 1 and Voyager 2 probes , have directly sampled the boundary, and two data points are far from sufficient to outline the heliosphere's contours.
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NASA releases weird-looking shape of our solar system | Technology News,The Indian Express
National Aeronautics and Space Administration (NASA) scientists have developed a new prediction about the shape of the bubble that surrounds our solar system. This has been made possible after the data collected from a model that was developed using various NASA missions.
Earlier, scientists thought that the shape of our heliosphere that travels through space as it orbits around the centre of the galaxy is similar to that of a comet with a round leading edge with a long tail trailing behind.
Jupiter's huge moon Ganymede may have the largest impact scar in the solar system | Space
Scientists have discovered what they believe may be the largest impact crater in the entire solar system, with scars covering a vast portion of Jupiter's biggest moon, Ganymede .
The scientists behind the new research wanted to revisit observations from a host of past NASA missions that studied the massive moon, which is larger than Mercury , the smallest planet in our neighborhood. In particular, they were intrigued by a set of features dubbed furrows, which appear on some of the moon's oldest terrain.
This is What the Solar System Really Looks Like - Universe Today
At first glance, it looks like something from an alien autopsy. A strange organ cut from a xenomorph’s thorax, under the flickering lights of an operating room in a top secret government facility, with venous tendrils dangling down to the floor, dripping viscous slime. (X-Com anyone?)
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This strangely fascinating shape is actually a graphic representation of what our Solar System looks like, or rather the magnetic bubble that surrounds our Solar System. It’s a representation of the heliosphere, a massive bubble carved into space by the Sun’s constant outflow.
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NASA news: Space agency reveals strange 'deflated croissant' shape of solar system | Science |
Outside this bubble is the ionised gas and magnetic field that fills the void between stellar systems.
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Experts used to think the heliosphere was comet-shaped, with a rounded tip and a long trailing tail.
But NASA has now proposed an alternative and rather unexpected shape lacking this long tail, dubbed the deflated croissant.
Only two manmade objects have got anywhere near it when both Voyager spacecraft exited our solar system and arrived at interstellar space.
Fragments of asteroids may have jumped the gap in the early solar system
Against the odds, however, a team of researchers including Associate Research Professor Devin L. Schrader and Research Scientist Jemma Davidson of Arizona State University's Center for Meteorite Studies have found evidence in meteorites that tiny fragments of asteroids from the inner solar system crossed the Jupiter Gap into the outer solar system . The results of their study have been recently published in Geochimica et Cosmochimica Acta .
"This research provides new information about the dynamics of the early solar system," lead author Schrader said. "Our research shows that these two reservoirs were not completely isolated from one another."
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Astronomers find the largest impact crater in the solar system | FREE NEWS
The researchers said they had found the largest crater in the solar system. It was formed due to the impact of a huge asteroid, which was moving at a speed of 20 km/s.
Scientists have discovered the largest impact crater in the entire solar system. Astronomers found it on Jupiter’s largest moon, Ganymede. Most of the celestial body is covered with “scars” from impacts, so it was difficult for researchers to find this crater.
Astronomers have relied on observational data from many past NASA missions. They studied the massive Moon, which is larger than Mercury, the smallest planet. In particular, they concentrated on the grooves that appear on the surface of celestial bodies.
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