Astro Royal Panadura

NASA - Sunrise Over the South Pacific Ocean The sun is about to come up over the South Pacific Ocean in this colorful scene photographed by one of the Expedition 35 crew members aboard the Earth-orbiting International Space Station between 4 and 5 a.m. local time, May 5, 2013. The space station was at a point above Earth located at 27.4 degre...

NASA Testing the Webb Telescope's MIRI Thermal Shield

NASA engineer Acey Herrera recently checked out copper test wires inside the thermal shield of the Mid-Infrared Instrument, known as MIRI, that will fly aboard NASA's James Webb Space Telescope. The shield is designed to protect the vital MIRI instrument from excess heat. At the time of the photo, the thermal shield was about to go through rigorous environmental testing to ensure it can perform properly in the extreme cold temperatures that it will encounter in space.

Herrera is working in a thermal vacuum chamber at NASA's Goddard Space Flight Center in Greenbelt, Md. As the MIRI shield lead, Herrera along with a thermal engineer and cryo-engineer verify that the shield is ready for testing.

On the Webb telescope, the pioneering camera and spectrometer that comprise the MIRI instrument sit inside the Integrated Science Instrument Module flight structure, that holds Webb's four instruments and their electronic systems during launch and operations.

Read more: http://1.usa.gov/15I0wrS

Credit: NASA/Goddard/Chris Gunn

NASA - Giant Gas Cloud in System NGC 6240 Scientists have used Chandra to make a detailed study of an enormous cloud of hot gas enveloping two large, colliding galaxies.

NASA - Hubble Sees the Remains of a Star Gone Supernova These thin, blood-red shells of gas are remnants from when an unstable progenitor star exploded violently as a supernova around 600 years ago.

NASA - Orion Crew Module at Kennedy Space Center Astronaut Don Pettit watches as a technician works on the Orion crew module inside the Operations and Checkout Building high bay at Kennedy Space Center on March 21, 2013. The last of eight reaction control system (RCS) pods for the first flight test of Orion have arrived at Kennedy Space Center's O...

Tails of Comet Lemmon
Image Credit & Copyright: Gerald Rhemann

Explanation: What caused the interestingly intricate tails that Comet Lemmon displayed earlier this year? First of all, just about every comet that nears the Sun displays two tails: a dust tail and an ion tail. Comet Lemmon's dust tail, visible above and around the comet nucleus in off-white, is produced by sun-light reflecting dust shed by the comet's heated nucleus. Flowing and more sculptured, however, is C/2012 F6 (Lemmon)'s blue ion tail, created by the solar wind pushing ions expelled by the nucleus away from the Sun. Also of note is the coma seen surrounding Comet Lemmon's nucleus, tinted green by atomic carbon gas fluorescing in sunlight. The above image was taken from the dark skies of Namibia in mid-April. Comet Lemmon is fading as it now heads back to the outer Solar System.

NASA will commemorate the 40th anniversary of America's first space station Monday, May 13, with a televised roundtable discussion featuring Skylab astronauts, a current astronaut and agency managers planning future space missions.

Galaxy Cove Vista
Image Credit & Copyright: Rogelio Bernal Andreo (Deep Sky Colors)

Explanation: To see a vista like this takes patience, hiking, and a camera. Patience was needed in searching out just the right place and waiting for just the right time. A short hike was needed to reach this rugged perch above a secluded cove in Julia Pfeiffer Burns State Park in California, USA. And a camera was needed for the long exposure required to bring out the faint light from stars and nebula in the background Milky Way galaxy. Moonlight and a brief artificial flash illuminated the hidden beach and inlet behind nearby trees in the above composite image taken about two weeks ago. Usually obscured McWay Falls is visible just below the image center, while the Pacific Ocean is in view to its right.