Are Black holes pure gravity?
kikog98No. Gravity isn’t a physical material so nothing can be made of it. Gravity is the attractive force created by the mass of an object. Black holes are stars that…
Analysis of a Martian meteorite reveals evidence of water 4.4 billion years ago
Martian meteorite NWA 7533 is worth more than its weight in gold. Credit: © NASA/Luc Labenne A meteorite that originated on Mars billions of years ago reveals details of ancient…