Friday, July 12, 2013

NASA Hubble Finds a True Blue Planet

p1326ay_hubble_blue_planet_0.jpg?itok=7ZNfHE60

Astronomers making visible-light observations with NASA’s Hubble Space Telescope have deduced the actual color of a planet orbiting another star 63 light-years away.

The planet is HD 189733b, one of the closest exoplanets that can be seen crossing the face of its star.

Hubble’s Space Telescope Imaging Spectrograph measured changes in the color of light from the planet before, during and after a pass behind its star. There was a small drop in light and a slight change in the color of the light. “We saw the light becoming less bright in the blue but not in the green or red. Light was missing in the blue but not in the red when it was hidden,” said research team member Frederic Pont of the University of Exeter in South West England. “This means that the object that disappeared was blue.”

Earlier observations have reported evidence for scattering of blue light on the planet. The latest Hubble observation confirms the evidence.

If seen directly, this planet would look like a deep blue dot, reminiscent of Earth’s color as seen from space. That is where the comparison ends.

[Read More…]

Tuesday, July 2, 2013

PROTON ROCKET CRASHES

A Russian Proton rocket went out of control and slammed into the steppes of Kazakhstan mere moments after launching from the Baikonur Cosmodrome on Monday night.

The government booster was carrying three Russian navigation satellites on the ill-fated mission that launched at 0238 GMT (10:38 p.m. EDT).

Live video showed the Proton gyrating left and then right as it ascended off the pad before going horizontal, barrel rolling and falling into a nose dive. The front end of the rocket sheared away and the main stage erupted in a massive fireball before hitting the ground in a horrific explosion.

The entire flight appeared to last a half-minute.

Russian rockets do not carry self-destruct explosives like Western boosters, which prevented any attempt to destroy the wayward Proton before impact.

A Russian Federal Space Agency statement said an emergency committee being created would be headed by Deputy Head of Roscosmos Alexander Lopatin.

Standing 19-stories tall, the rocket weighed nearly 1.5 million pounds at launch, its first three stages loaded with unsymmetrical dimethylhydrazine and nitrogen tetroxide propellants and the upper stage filled with kerosene and liquid oxygen.

[Read More…]

Admin area

Menu

Ad