The Perseid meteor shower, a celestial event eagerly awaited by millions of skywatchers around the world, is about to make its annual return to the night sky. The shower is predicted to reach its peak before dawn on Sunday, ...
Space Exploration
Aug 7, 2023
0
369
3D holograms, previously seen only in science fiction movies, may soon make their way to consumer technology. Until now, 3D holograms based on phase shifting holography method could be captured using a large, specialized ...
Nanophysics
Jan 5, 2022
0
216
(PhysOrg.com) -- Stars, the most familiar objects in the night sky, make up only a tiny percentage of the total amount of matter in the universe -- about 2%.
Astronomy
Oct 30, 2009
19
0
A multi-institutional team of optoelectronic and materials engineers in China has developed a type of metamaterial that is nearly invisible across visible light, microwave and infrared spectra. In their paper, published in ...
(PhysOrg.com) -- Scientists from the University of Toronto and the University of British Columbia have helped unveil the birthplaces of ancient stars using a two-tonne telescope carried by a balloon the size of a 33-storey ...
Astronomy
Apr 8, 2009
1
0
As streetlights the world over change from sodium lamps to LED, scientists wonder what this will mean for the artificial skyglow over cities. Because not every city lights the same way, the best way to understand whether ...
Software
Dec 3, 2015
0
8
Artificial night time light from sources such as street lamps affects the growth and flowering of plants and even the number of insects that depend on those plants for food, a study published today confirms.
Ecology
Mar 16, 2015
0
1200
Something wonderful happened about 13.8 billion years ago. Everything in the universe was created in an instant as an infinitesimally small point of energy: the Big Bang. We know that this event happened, as the universe ...
Astronomy
Jan 25, 2018
3
98
People around the world are seeing fewer and fewer stars in the night sky. The change in star visibility can be explained by an increase in the sky brightness of 7–10% per year. The rate of change is faster than satellite ...
Astronomy
Jan 19, 2023
0
100
For decades, the stars in our night sky have been blotted out by artificial light—from streetlamps, residential houses, businesses, construction sites, vehicles, billboards and so on. The glow they emit misdirects light ...
Astronomy
Sep 28, 2021
0
312
