News tagged with night
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 |
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Calculating what's in the universe from the biggest color 3-D map
Since 2000, the three Sloan Digital Sky Surveys (SDSS I, II, III) have surveyed well over a quarter of the night sky and produced the biggest color map of the universe in three dimensions ever. Now scientists ...
Jan 11, 2012 |
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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 |
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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 |
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New generation of superlattice cameras add more 'color' to night vision
Recent breakthroughs have enabled scientists from the Northwestern University's Center for Quantum Devices to build cameras that can see more than one optical waveband or "color" in the dark. The semiconducting material used ...
Oct 20, 2011 |
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Too much light at night may lead to obesity, study finds
Persistent exposure to light at night may lead to weight gain, even without changing physical activity or eating more food, according to new research in mice.
Oct 11, 2010 |
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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 |
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How to See the Best Meteor Showers of 2010: Tools, Tips and 'Save the Dates'
(PhysOrg.com) -- There are seven major meteor showers remaining in 2010 (the Quadrantids occurred in early January 2010), with some more active than others. For example, April's Lyrids are expected to produce ...
Space & Earth / Space Exploration
Apr 22, 2010 |
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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 |
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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 |
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No strain for Andromeda: Galaxy is cosmic cannibal (w/ Video)
(PhysOrg.com) -- A huge galaxy neighbouring our own Milky Way appears to have expanded by "digesting" smaller galaxies nearby, a new study has shown.
Sep 02, 2009 |
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Electric Moon jolts the solar wind
(Phys.org) -- With the Moon as the most prominent object in the night sky and a major source of an invisible pull that creates ocean tides, many ancient cultures thought it could also affect our health or ...
Space & Earth / Space Exploration
May 30, 2012 |
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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 |
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Image: Hubble peeks inside a stellar cloud
(Phys.org) -- These bright stars shining through what looks like a haze in the night sky are part of a young stellar grouping in one of the largest known star formation regions of the Large Magellanic Cloud ...
Apr 23, 2012 |
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Venus found to have aurora type magnetotails
(PhysOrg.com) -- Researchers studying the planet Venus have found that despite a lack of a magnetic field, the planet has magnetotails, which on Earth are part of the process known as the Northern and Southern ...
Space & Earth / Space Exploration
Apr 06, 2012 |
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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.
