What are asteroids made of? Asteroids are made mostly of rock—with some composed of clay and silicate—and different metals, mostly nickel and iron. But other materials have been found in asteroids, as well.
Space Exploration
Sep 14, 2015
0
29
Where did the two natural satellites of Mars, Phobos and Deimos, come from? For a long time, their shape suggested that they were asteroids captured by Mars. However, the shape and course of their orbits contradict this hypothesis. ...
Space Exploration
Jul 4, 2016
22
2218
During the course of a deep space mission, astronauts are routinely in various degrees of peril. Depending on which Hollywood sci-fi thrillers you choose, these intrepid explorers are at the mercy of malicious aliens, psychotic ...
Space Exploration
Aug 6, 2019
8
462
Three billion years ago, amid one of the last wet periods on Mars, powerful debris flows carried mud and boulders down the side of a hulking mountain. The debris spread into a fan that was later eroded by wind into a towering ...
Planetary Sciences
Sep 18, 2023
0
297
The plight of Malaysia Airlines flight 370 (MH370) is one of the biggest mysteries in aviation history, but an interdisciplinary research team led by a Texas A&M University at Qatar math professor has theorized the ill-fated ...
Mathematics
Jun 8, 2015
2
161
In the first study to look at what happens over the years to the billions of pounds of plastic waste floating in the world's oceans, scientists are reporting that plastics -- reputed to be virtually indestructible -- decompose ...
Other
Aug 19, 2009
1
2
The 2014 disappearance of Malaysia Airlines Flight MH370 remains ones of the biggest mysteries in aviation. More than $150 million has been spent so far to identify where the plane carrying 239 passengers crashed into the ...
General Physics
Apr 30, 2019
1
380
So you think global warming is a big problem? What could happen if a 25-million-ton chunk of rock slammed into Earth? When something similar happened 65 million years ago, the dinosaurs and other forms of life were wiped ...
Space Exploration
Jan 28, 2011
58
0
A great offshoot from commercial space companies getting a foothold in real missions to orbit is that the old entrepreneurial space spirit seems to have been revived. People are attempting to develop and build what could ...
Space Exploration
Nov 2, 2012
41
0
This past weekend, a lot of attention was focused on the Tiangong-1 space station. For some time, space agencies and satellite trackers from around the world had been predicting when this station would fall to Earth. And ...
Space Exploration
Apr 4, 2018
0
62
