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ScienceDaily: Space & Time News |
| Nearby star could help explain why our Sun didn’t have sunspots for 70 years Posted: 22 Mar 2022 09:28 AM PDT Astronomers identified a nearby star whose sunspot cycles appear to have stopped. Studying this star might help explain the unusual period from the mid 1600s to the early 1700s when our Sun paused its sunspot cycles. |
| Could the asteroid Ryugu be a remnant of an extinct comet? Scientists now answer Posted: 22 Mar 2022 08:13 AM PDT The Hayabusa2 mission has recently uncovered information on the physical characteristics of the asteroid 'Ryugu,' which, according to the conventional theory, forms from a collision between larger asteroids. Now, a study by scientists from Japan suggests that Ryugu is, in fact, an extinct comet. With a simple physical model that fits currently available observations, the study provides a better understanding of comets, asteroids, and the evolution of our solar system. |
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