Light exerts a certain amount of pressure onto a body: sun sails could thus power space probes in the future. However, when light particles (photons) hit an individual molecule and knock out an electron, the molecule flies ...
General Physics
Jun 15, 2020
2
972
Physicist and entrepreneur Stephen Wolfram has unveiled "The Wolfram Physics Project," which he subtitles "A Project to Find the Fundamental Theory of Physics." The aim of the project is to enlist the assistance of people ...
ESA's XMM-Newton X-ray observatory has spied hot gas sloshing around within a galaxy cluster—a never-before-seen behaviour that may be driven by turbulent merger events.
Astronomy
Jan 10, 2020
25
272
It's been nearly 350 years since Sir Isaac Newton outlined the laws of motion, claiming "For every action, there is an equal and opposite reaction." These laws laid the foundation to understand our solar system and, more ...
General Physics
Dec 18, 2019
7
6411
Two decades ago, on Dec. 10, 1999, an Ariane 5 rocket climbed into the morning sky from Kourou, French Guiana. It carried into orbit the X-ray Multi-Mirror Mission (XMM-Newton), the largest scientific spacecraft yet built ...
Astronomy
Dec 11, 2019
0
14
As the film Ghostbusters showed, true believers in the supernatural rarely prosper in the scientific establishment. Throughout history, scientists who entertained theories on ghosts, magic and the afterlife were discredited ...
Social Sciences
Nov 1, 2019
7
364
Using ESA's XMM-Newton space telescope, astronomers have found that the planetary nebula NGC 5189 harbors a carbon-enriched X-ray-emitting hot bubble. The discovery, presented in a paper published September 30 on arXiv.org, ...
Scientists have designed an ultra-miniaturised device that could directly image single cells without the need for a microscope or make chemical fingerprint analysis possible from a smartphone.
Optics & Photonics
Sep 5, 2019
1
967
This colourful spread of light specks is in fact a record of extremely powerful phenomena taking place in a galaxy known as Messier 83, or M83. Located some 15 million light-years away, M83 is a barred spiral galaxy, not ...
Astronomy
Aug 26, 2019
0
40
When Isaac Newton first attempted to describe momentum in his 1687 work Principia, he hit upon an eloquent formula—an object's momentum is its mass times its velocity. Or P=MV.
Political science
Aug 12, 2019
38
940
