News tagged with night
Scientists invent long-lasting, near infrared-emitting material
Materials that emit visible light after being exposed to sunlight are commonplace and can be found in everything from emergency signage to glow-in-the-dark stickers. But until now, scientists have had little ...
Nanotechnology / Nanomaterials
Nov 20, 2011 |
4.5 / 5 (26) |
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Dark Matter in a Galaxy
(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%.
Oct 30, 2009 |
4 / 5 (22) |
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Engineers turn noise into vision
(PhysOrg.com) -- A new technique for revealing images of hidden objects may one day allow pilots to peer through fog and doctors to see more precisely into the human body without surgery.
Apr 01, 2010 |
4.6 / 5 (19) |
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World's largest 3.2 billion-pixel digital camera project passes critical milestone
A 3.2 billion-pixel digital camera designed by SLAC National Accelerator Laboratory is now one step closer to reality. The Large Synoptic Survey Telescope camera, which will capture the widest, fastest and ...
Apr 24, 2012 |
4.8 / 5 (17) |
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'Cambridge Nights': a late night show for scientists
(PhysOrg.com) -- While it’s not uncommon to see scientists on TV, most of the time it’s just for a few minutes on the news to comment on a recent event or major discovery. A new late night show called ...
Oct 31, 2011 |
4.9 / 5 (16) |
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Centuries-Old Star Mystery Coming to a Close
(PhysOrg.com) -- For almost two centuries, humans have looked up at a bright star called Epsilon Aurigae and watched with their own eyes as it seemed to disappear into the night sky, slowly fading before coming ...
Jan 05, 2010 |
4.9 / 5 (16) |
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Australian city's hottest night in 108 years
The Australian city of Melbourne has sweltered through its hottest night since 1902, with temperatures topping 34 degrees Celsius (93 degrees Fahrenheit), meteorologists said Tuesday.
Jan 12, 2010 |
3.8 / 5 (19) |
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Cosmic census finds crowd of planets in our galaxy
(AP) -- Scientists have estimated the first cosmic census of planets in our galaxy and the numbers are astronomical: at least 50 billion planets in the Milky Way.
Feb 20, 2011 |
5 / 5 (14) |
8
New camouflage technology from BAE hides war machines
(PhysOrg.com) -- BAE Systems says it has a camouflage system that can render battle machines like tanks invisible or even seen as other objects in the immediate environment to protect against attack. The 'cloak' ...
Sep 07, 2011 |
4.7 / 5 (15) |
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Astronomers unveil an amazing, interactive, 360-degree panoramic view of the entire night sky
(PhysOrg.com) -- The first of three images of ESO's GigaGalaxy Zoom project — a new magnificent 800-million-pixel panorama of the entire sky as seen from ESO's observing sites in Chile — has just been released ...
Sep 14, 2009 |
4.9 / 5 (14) |
2
Researchers reveal unseen planet by its gravity
More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. In a ...
May 10, 2012 |
4.9 / 5 (14) |
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How to see the best meteor showers of 2012: Tools, tips and 'save the dates'
(PhysOrg.com) -- Whether you're watching from a downtown area or the dark countryside, here are some tips to help you enjoy these celestial shows of shooting stars. Those streaks of light are really caused ...
Space & Earth / Space Exploration
Jan 02, 2012 |
4.5 / 5 (15) |
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Researcher: Cell phones could double as night vision devices
(PhysOrg.com) -- Call it Nitelite: The newest app for cell phones might be night vision.
May 04, 2010 |
4.6 / 5 (14) |
10
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Jupiter making closest approach in nearly 50 years
(AP) -- Better catch Jupiter next week in the night sky. It won't be that big or bright again until 2022. Jupiter will pass 368 million miles from Earth late Monday, its closest approach since 1963. You can ...
Space & Earth / Space Exploration
Sep 17, 2010 |
4.9 / 5 (13) |
2
Light at night causes changes in brain linked to depression
Exposure to even dim light at night is enough to cause physical changes in the brains of hamsters that may be associated with depression, a new study shows.
Medicine & Health / Neuroscience
Nov 17, 2010 |
4.6 / 5 (14) |
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Night
Night or nighttime is the period of time when the sun is below the horizon. This occurs after dusk. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). The start and end times of night vary based on factors such as season, latitude, longitude and timezone.
At any given time, one side of the planet Earth is bathed in light from the Sun (the daytime) and the other side of the Earth is in the shadow caused by the Earth blocking the light of the sun. This shadow is what we call the darkness of night.
For more information about Night, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
