Two companies, OneWeb and SpaceX, are racing to put fleets of thousands of communication satellites into orbit. In March, they had their first near miss. Avoidance maneuvers were successful, but how many more close calls ...
Space Exploration
May 12, 2021
2
19
Stars form by the gravitational contraction of clouds of gas in space and can have various masses. Massive stars, together with many other stars, may form a huge star cluster (a group of more than 10,000 stars). The formation ...
Astronomy
May 7, 2021
11
808
CERN's Large Hadron Collider (LHC) is famous for colliding protons at world-record energies—but sometimes it pays to dial down the energy and see what happens under less extreme conditions. The LHC started operation in ...
General Physics
Apr 30, 2021
2
560
When heavy ions, accelerated to the speed of light, collide with each other in the depths of European or American accelerators, quark-gluon plasma is formed for fractions of a second, or even its 'cocktail' seasoned with ...
General Physics
Apr 29, 2021
1
112
Studying the violent collisions of black holes and neutron stars may soon provide a new measurement of the Universe's expansion rate, helping to resolve a long-standing dispute, suggests a new simulation study led by researchers ...
General Physics
Apr 28, 2021
3
255
The launch of Sputnik, humankind's first satellite, in 1957 marked the dawn of a new era for the people of Earth.
Space Exploration
Apr 20, 2021
1
14
Planetary systems form out of the remnant gas and dust of a primordial star. The material collapses into a protoplanetary disk around the young star, and the clumps that form within the disk eventually become planets, asteroids, ...
Space Exploration
Apr 12, 2021
0
19
The standard model of particle physics encapsulates our current knowledge of elementary particles and their interactions. The standard model is not complete; for example, it does not describe observations such as gravity, ...
General Physics
Apr 5, 2021
4
144
A team of researchers from Germany and the U.K. has found that bond-selective reactions can be observed during certain molecular collisions. In their paper published in the journal Physical Review Letters, the group describes ...
Even on the hottest and driest days, rays from the sun are too weak to ignite a fire. But with a magnifying glass (or, in some unfortunate cases, a glass garden ornament), you can focus sunlight into a beam bright enough ...
Optics & Photonics
Feb 3, 2021
0
19
