Search found 5378 matches
- Fri Aug 13, 2010 4:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Arp 286: Trio in Virgo (2010 Aug 13)
- Replies: 10
- Views: 2245
APOD: Arp 286: Trio in Virgo (2010 Aug 13)
http://apod.nasa.gov/apod/calendar/S_100813.jpg Arp 286: Trio in Virgo Explanation: A remarkable telescopic composition in yellow and blue, this scene features a trio of interacting galaxies almost 90 million light-years away, toward the constellation Virgo . On the left, two, spiky , foreground Mi...
- Thu Aug 12, 2010 4:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Perseid Prelude (2010 Aug 12)
- Replies: 7
- Views: 1790
APOD: Perseid Prelude (2010 Aug 12)
http://apod.nasa.gov/apod/calendar/S_100812.jpg Perseid Prelude Explanation: Each August, as planet Earth swings through dust trailing along the orbit of periodic comet Swift-Tuttle , skygazers can enjoy the Perseids Meteor Shower . The shower should build to its peak now , best seen from later ton...
- Wed Aug 11, 2010 4:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Crepuscular Rays Over Lake Michigan (2010 Aug 11)
- Replies: 11
- Views: 2138
APOD: Crepuscular Rays Over Lake Michigan (2010 Aug 11)
http://apod.nasa.gov/apod/calendar/S_100811.jpg Crepuscular Rays Over Lake Michigan Explanation: What could cause such rays of dark? Dark sky rays were caught in spectacular fashion earlier last month from Pentwater , Michigan , USA , looking west over Lake Michigan . The cause is something surpris...
- Tue Aug 10, 2010 10:17 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Sand Dunes of Titan (2010 Aug 10)
- Replies: 15
- Views: 5167
APOD: The Sand Dunes of Titan (2010 Aug 10)
http://apod.nasa.gov/apod/calendar/S_100810.jpg The Sand Dunes of Titan Explanation: Why do some sand dunes on Titan appear backwards? Central Titan , it turns out, is covered by sand , some of which appears strange. Images from the Cassini spacecraft currently orbiting Saturn have uncovered long r...
- Mon Aug 09, 2010 4:03 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: IRAS 05437 2502: An Enigmatic Star... (2010 Aug 09)
- Replies: 39
- Views: 7102
APOD: IRAS 05437 2502: An Enigmatic Star... (2010 Aug 09)
http://apod.nasa.gov/apod/calendar/S_100809.jpg IRAS 05437 2502: An Enigmatic Star Cloud from Hubble Explanation: What's lighting up nebula IRAS 05437+2502? No one is sure. Particularly enigmatic is the bright upside-down V that defines the upper edge of this floating mountain of interstellar dust ...
- Sun Aug 08, 2010 4:03 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Two Hours Before Neptune (2010 Aug 08)
- Replies: 15
- Views: 5134
APOD: Two Hours Before Neptune (2010 Aug 08)
http://apod.nasa.gov/apod/calendar/S_100808.jpg Two Hours Before Neptune Explanation: Two hours before closest approach to Neptune in 1989, the Voyager 2 robot spacecraft snapped this picture . Clearly visible for the first time were long light-colored cirrus -type clouds floating high in Neptune's...
- Sat Aug 07, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Rainbow at Sunset (2010 Aug 07)
- Replies: 45
- Views: 5958
APOD: Rainbow at Sunset (2010 Aug 07)
http://apod.nasa.gov/apod/calendar/S_100807.jpg Rainbow at Sunset Explanation: Where is the Sun when you see a rainbow? Behind you, of course . But you can see both a rainbow and the Sun (far right) side by side in this graceful panorama recorded on July 28. The cloudy sunset view covers a full 360...
- Fri Aug 06, 2010 4:12 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Not So Quiet Sun (2010 Aug 06)
- Replies: 10
- Views: 1906
APOD: The Not So Quiet Sun (2010 Aug 06)
http://apod.nasa.gov/apod/calendar/S_100806.jpg The Not So Quiet Sun Explanation: After a long solar minimum , the Sun is no longer so quiet . On August 1, this extreme ultraviolet snapshot of the Sun from the Solar Dynanimcs Observatory captured a complex burst of activity playing across the Sun's...
- Thu Aug 05, 2010 4:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: M8: The Lagoon Nebula (2010 Aug 05)
- Replies: 11
- Views: 2356
APOD: M8: The Lagoon Nebula (2010 Aug 05)
http://apod.nasa.gov/apod/calendar/S_100805.jpg M8: The Lagoon Nebula Explanation: This beautiful cosmic cloud is a popular stop on telescopic tours of the constellation Sagittarius . Eighteenth century cosmic tourist Charles Messier cataloged the bright nebula as M8 . Modern day astronomers recogn...
- Wed Aug 04, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Eclipse Shadow Cone Over Patagonia (2010 Aug 04)
- Replies: 16
- Views: 2969
APOD: Eclipse Shadow Cone Over Patagonia (2010 Aug 04)
http://apod.nasa.gov/apod/calendar/S_100804.jpg Eclipse Shadow Cone Over Patagonia Explanation: Sometimes, during a total eclipse of the Sun, a strange shadow of darkness can be seen stretching off into the distance. Called shadow cones, they are visible because the Earth's atmosphere is not comple...
- Tue Aug 03, 2010 4:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Planet and the Radio Dish (2010 Aug 03)
- Replies: 32
- Views: 4614
APOD: The Planet and the Radio Dish (2010 Aug 03)
http://apod.nasa.gov/apod/calendar/S_100803.jpg The Planet and the Radio Dish Explanation: What planet is this? Although seemingly something out of The Little Prince , the planet is actually Earth. More specifically, it is a small part of the Earth incorporated into a four image stereographic "...
- Mon Aug 02, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Prometheus Creating Saturn Ring... (2010 Aug 02)
- Replies: 17
- Views: 3291
APOD: Prometheus Creating Saturn Ring... (2010 Aug 02)
http://apod.nasa.gov/apod/calendar/S_100802.jpg Prometheus Creating Saturn Ring Streamers Explanation: What's causing those strange dark streaks in the rings of Saturn? Prometheus . Specifically, an orbital dance involving Saturn's moon Prometheus keeps creating unusual light and dark streamers in ...
- Sun Aug 01, 2010 4:07 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Venus Once Molten Surface (2010 Aug 01)
- Replies: 22
- Views: 3269
APOD: Venus Once Molten Surface (2010 Aug 01)
http://apod.nasa.gov/apod/calendar/S_100801.jpg Venus Once Molten Surface Explanation: If you could look across Venus with radar eyes, what might you see? This computer reconstruction of the surface of Venus was created from data from the Magellan spacecraft. Magellan orbited Venus and used radar t...
- Sat Jul 31, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Four Planet Sunset (2010 Jul 31)
- Replies: 16
- Views: 3265
APOD: Four Planet Sunset (2010 Jul 31)
http://apod.nasa.gov/apod/calendar/S_100731.jpg Four Planet Sunset Explanation: This mesmerizing sunset photo was taken from the summit of volcanic Mount Lawu , 3,265 meters above sea level, on July 21. The view looks west, toward the city lights of Surakarta (aka Solo), Central Java, Indonesia . T...
- Fri Jul 30, 2010 4:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Eclipse on the Beach (2010 Jul 30)
- Replies: 11
- Views: 1514
APOD: Eclipse on the Beach (2010 Jul 30)
http://apod.nasa.gov/apod/calendar/S_100730.jpg Eclipse on the Beach Explanation: As the New Moon's shadow slid across the southern Pacific on July 11, people gathered along the white, sandy Anakena Beach on the north side of Easter Island to watch a total solar eclipse . The experience was capture...
- Thu Jul 29, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sunset, Shadowrise (2010 Jul 29)
- Replies: 18
- Views: 3050
APOD: Sunset, Shadowrise (2010 Jul 29)
http://apod.nasa.gov/apod/calendar/S_100729.jpg Sunset, Shadowrise Explanation: From central Australia, this serene 360 degree panorama follows a clear horizon as twilight began on May 28. At left, a bright western sky is still illuminated by the setting Sun. But sweeping right, toward a view cente...
- Wed Jul 28, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Trifid Nebula is Stars and Dust (2010 Jul 28)
- Replies: 25
- Views: 6147
APOD: The Trifid Nebula is Stars and Dust (2010 Jul 28)
http://apod.nasa.gov/apod/calendar/S_100728.jpg The Trifid Nebula is Stars and Dust Explanation: Unspeakable beauty and unimaginable bedlam can be found together in the Trifid Nebula . Also known as M20, this photogenic nebula is visible with good binoculars towards the constellation of Sagittarius...
- Tue Jul 27, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Milky Way Over Bryce Canyon (2010 Jul 27)
- Replies: 42
- Views: 5347
APOD: The Milky Way Over Bryce Canyon (2010 Jul 27)
http://apod.nasa.gov/apod/calendar/S_100727.jpg The Milky Way Over Bryce Canyon Explanation: What are those strange rock structures? They are towers and walls of sedimentary rock that are particularly plentiful in Bryce Canyon in Utah , USA . The rock columns may rise higher than 50 meters and are ...
- Mon Jul 26, 2010 4:07 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Lutetia: The Largest Asteroid Yet... (2010 Jul 26)
- Replies: 15
- Views: 3984
APOD: Lutetia: The Largest Asteroid Yet... (2010 Jul 26)
http://apod.nasa.gov/apod/calendar/S_100726.jpg Lutetia: The Largest Asteroid Yet Visited Explanation: As humans explore the universe, the record for largest asteroid visited by a spacecraft has increased yet again. Earlier this month, ESA's robotic Rosetta spacecraft zipped past the asteroid 21 Lu...
- Sun Jul 25, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Happy People Dancing on Planet Earth (2010 Jul 25)
- Replies: 94
- Views: 7319
APOD: Happy People Dancing on Planet Earth (2010 Jul 25)
http://apod.nasa.gov/apod/calendar/S_100725.jpg Happy People Dancing on Planet Earth Explanation: What are these humans doing? Dancing. Many humans on Earth exhibit periods of happiness, and one method of displaying happiness is dancing. Happiness and dancing transcend political boundaries and occu...
- Sat Jul 24, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Diamond Ring and Shadow Bands (2010 Jul 24)
- Replies: 12
- Views: 1883
APOD: Diamond Ring and Shadow Bands (2010 Jul 24)
http://apod.nasa.gov/apod/calendar/S_100724.jpg Diamond Ring and Shadow Bands Explanation: As the total phase of July 11's solar eclipse came to an end, sunlight streaming past the edge of the Moon's silhouette created the fleeting appearance of a glistening diamond ring in the sky. Seen through a ...
- Fri Jul 23, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Messier 76 (2010 Jul 23)
- Replies: 25
- Views: 4495
APOD: Messier 76 (2010 Jul 23)
http://apod.nasa.gov/apod/calendar/S_100723.jpg Messier 76 Explanation: "Nebula at the right foot of Andromeda ... " begins the description for the 76th object in Charles Messier's 18th century Catalog of Nebulae and Star Clusters . In fact, M76 is one of the fainter objects on the Messie...
- Thu Jul 22, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Meteor of 1860 (2010 Jul 22)
- Replies: 20
- Views: 2565
APOD: The Meteor of 1860 (2010 Jul 22)
http://apod.nasa.gov/apod/calendar/S_100722.jpg The Meteor of 1860 Explanation: Frederic Church (1826-1900), American landscape painter of the Hudson River School, painted what he saw in nature. And on July 20th, 1860, he saw a spectacular string of fireball meteors cross the Catskill evening sky, ...
- Wed Jul 21, 2010 4:06 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Crown of the Sun (2010 Jul 21)
- Replies: 14
- Views: 1959
APOD: The Crown of the Sun (2010 Jul 21)
http://apod.nasa.gov/apod/calendar/S_100721.jpg The Crown of the Sun Explanation: During a total solar eclipse, the Sun's extensive outer atmosphere, or corona, is an inspirational sight. Subtle shades and shimmering features that engage the eye span a brightness range of over 10,000 to 1, making t...
- Tue Jul 20, 2010 4:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Lightning Over Athens (2010 Jul 20)
- Replies: 29
- Views: 4457
APOD: Lightning Over Athens (2010 Jul 20)
http://apod.nasa.gov/apod/calendar/S_100720.jpg Lightning Over Athens Explanation: Have you ever watched a lightning storm in awe? Join the crowd. Oddly, nobody knows exactly how lightning is produced. What is known is that charges slowly separate in some clouds causing rapid electrical discharges ...