In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a dune-filled region of the Sahara Desert in southern Algeria. On close inspection, the rocks turned out to be from outer space: lumps of rubble billions of years old, left over from the dawn of the Solar ...
Impact craters happen on every solid body in the Solar System. In fact, it is the dominant process affecting the surfaces of most extraterrestrial bodies today. On Earth, however, such craters are often lost over time by active geological processes, but elsewhere in the Solar System, there are some truly majestic examples of impact craters ...
A survey of the residual light in the night sky has uncovered an eerie, omnipresent glow spread throughout the Solar System, thought to be caused by sunlight reflected from cometary dust. Over its 30-plus years of operations, astronomers have become accustomed to subtracting the background light from the Solar System from Hubble’s images. They are ...
A spartan scientist has helped develop a new explanation for why our solar system is the way it is — and why others are, too. Michigan State University’s Seth Jacobson and colleagues in China and France have unveiled a new theory that could help solve a galactic mystery of how our solar system evolved. Specifically, how did ...
Earth is very water-rich compared to other rocky planets in the Solar System, with oceans covering more than 70 percent of its surface. Scientists have long puzzled over where all that water came from. Curtin University researchers have helped unravel the enduring mystery of the origins of the Earth’s water, finding the Sun to be ...
Krypton from the Earth’s mantle, collected from geologic hot spots in Iceland and the Galapagos Islands, reveals a clearer picture of how our planet formed, according to new research from the University of California, Davis. The different isotopes of krypton are chemical fingerprints for scientists sleuthing out the ingredients that made the Earth, such as ...
The NASA/ESA Hubble Space Telescope has completed its annual grand tour of the outer Solar System. This is the realm of the giant planets — Jupiter, Saturn, Uranus, and Neptune — extending as far as 30 times the distance between Earth and the Sun. Unlike the rocky terrestrial planets like Earth and Mars that huddle close to ...
On June 7, 2021, NASA’s Juno spacecraft flew closer to Jupiter’s ice-encrusted moon Ganymede than any spacecraft in more than two decades. Less than a day later, Juno made its 34th flyby of Jupiter, racing over its roiling atmosphere from pole to pole in less than three hours. Using the spacecraft’s JunoCam imager, the mission team has put ...
Just released first images from the National Science Foundation’s Daniel K. Inouye Solar Telescope reveal unprecedented detail of the Sun’s surface and preview the world-class products to come from this preeminent 4-meter solar telescope. NSF’s Inouye Solar Telescope, on the summit of Haleakala, Maui, in Hawai‘i, will enable a new era of solar science and ...
Astronomers at the National Astronomical Observatory of Japan (NAOJ) have analyzed the paths of two outbound comets heading out of the Solar System forever and determined that they also most likely originated from outside of the Solar System. These results improve our understanding of the outer Solar System and beyond. Not all comets follow closed ...