Astronomers, using Hubble Space Telescope as a particle detector, have traced cosmic rays flowing in Earth’s geomagnetic field. The post The Hubble Space Telescope As Cosmic-Ray Detector appeared first on Sky & Telescope.
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Ingenuity Mars Heliscopter: First Flight on Mars
NASA’s Ingenuity Mars Helicopter has made its brief hop into the history books of interplanetary aviation. The post Ingenuity Mars Heliscopter: First Flight on Mars appeared first on Sky & Telescope.
Read MoreMake the Most of Comet ATLAS
Bright comets will be scarce this year, but you can see one of the better ones this month as it races from Aquila to Canes Venatici. In other news, a new, bright nova has flared in Sagittarius. The post Make the Most of Comet ATLAS appeared first on Sky & Telescope.
Read MoreBits of Theia Might Be in Earth’s Mantle
A “smoking gun” for the ancient calamity that formed Earth’s large Moon may still exist deep in the mantle of our planet. The post Bits of Theia Might Be in Earth's Mantle appeared first on Sky & Telescope.
Read MoreInterstellar Comet Was Pristine Sample of Planet Formation
New analysis shows that Comet 2I/Borisov, which zipped nearest the Sun in late 2019, was unlike any comet we’ve seen before. The post Interstellar Comet Was Pristine Sample of Planet Formation appeared first on Sky & Telescope.
Read MoreAsteroid Apophis Will Miss Earth in 2068
Radar measurements taken early this month rule out any chance of a collision with Apophis over the next 100 years. The post Asteroid Apophis Will Miss Earth in 2068 appeared first on Sky & Telescope.
Read MoreJupiter’s Great Red Spot Gets Smaller — But Stronger
“Flakes” coming off the Great Red Spot have had some wondering if this epic storm is coming to an end. But observations and computer modeling show it’s only getting stronger. The post Jupiter's Great Red Spot Gets Smaller — But Stronger appeared first on Sky & Telescope.
Read MoreIs an Ocean of Mars Water Trapped in the Planet’s Crust?
A new study suggests that by 3 billion years ago, most of the Red Planet’s water was locked away in minerals, and it has stayed there ever since. The post Is an Ocean of Mars Water Trapped in the Planet’s Crust? appeared first on Sky & Telescope.
Read MoreCan We Expect Seven Interstellar Visitors Per Year?
A new study estimates the number of interstellar objects that fly through the inner solar system every year, and it could be quite a lot. The post Can We Expect Seven Interstellar Visitors Per Year? appeared first on Sky & Telescope.
Read MoreKarma Asteroid Family Might Be Sending Members Near Earth
New simulations have identified the Karma family of asteroids in the main belt as a potential source of near-Earth asteroids. The post Karma Asteroid Family Might Be Sending Members Near Earth appeared first on Sky & Telescope.
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