Lei Den's posts with tag: photography
Image Credit: J. Griffin / Jefferson Lab An electron (bright green) has just scattered from a nucleus and created a pion (green-skinned particle). This pion's quarks are so tightly packed that they nearly cancel each other's color charge, allowing the pion to slip through the nucleus without interacting, an effect now seen at the lowest possible energies. PhysicsCentral
Photograph by David Doubilet 
National Geographic
FEB. 3 2008 Light Echoes from V838 MonCredit: NASA and the Hubble Heritage Team (AURA/STScI) What caused this outburst of V838 Mon? For reasons unknown, star V838 Mon's outer surface suddenly greatly expanded with the result that it became the brightest star in the entire Milky Way Galaxy in January 2002. Then, just as suddenly, it faded. A stellar flash like this has never been seen before -- supernovas and novas expel matter out into space. Although the V838 Mon flash appears to expel material into space, what is seen in the above image from the Hubble Space Telescope is actually an outwardly moving light echo of the bright flash. In a light echo, light from the flash is reflected by successively more distant rings in the complex array of ambient interstellar dust that already surrounded the star. V838 Mon lies about 20,000 light years away toward the constellation of the unicorn (Monoceros), while the light echo above spans about six light years in diameter.
Astronomy Picture of the Day
 - Wahid Adnan, Bangladesh -
Hiding from the vigilant eyes of the ticket inspector, this woman perches precariously between train coaches in Chittagong, Bangladesh. "Those who can't afford a railway ticket are forced to travel on the rooftop of the train or on the junction in between," says Wahid Adnan, a student from Chittagong University who shot this picture while on the roof.
This method of travel has resulted in many casualties, yet many people still take the risk because they have no other choice. An average train ticket costs about 22 cents - a considerable expense for the poor.
Photograph by Bob Krist A tour boat floats along the Tiber River, with the dome of St. Peter’s Basilica in the background.
 Earthrise from Moon-Orbiting KaguyaCredit & Copyright: SELENE Team, JAXA, NHK What does the Earth look like from the Moon? A new version of this space age perspective was captured by the robotic Kaguya spacecraft currently in orbit around Earth's Moon. Launched two months ago by Japan, the scientific mission of the Selenological and Engineering Explorer (SELENE), nicknamed Kaguya, is to study the origin and evolution of the Moon. Last month Kaguya reached lunar orbit and starting transmitting data and images. This frame is from Kaguya's onboard HDTV camera. An astronaut standing on the lunar surface would never actually see the Earth rise, since the Moon always keeps the same side toward the Earth. This Earthrise as well as the famous Earthrise captured 40 years ago by the crew of Apollo 8, only occurs for observers in lunar orbit. Astronomy Picture of the Day
Erwin Kusuma, Indonesia Madura Island, off the northeastern coast of East Java, Indonesia, is one of the provinces poorest regions. Erwin Kusuma was travelling through the area when he saw a woman carrying a heavy basket of rocks from a boat on the beach. The rocks are used as building materials. "People struggle to make a living here. There's a lack of natural resources, and poor people everywhere. But amidst all the poverty, there's still much beauty on the island," says Kusuma, who captured this photo as the sun set. Reader's Digest - UNSEEN ASIA
| |
