The Mystery Planet Mars

The Red planet Mars is always been a mystery for all the scientist in NASA.

               
This planet is in observation since a long time but still NASA is not confident enough to say whether life can exist there or not. Lord Rees of Ludlow said the US space agency's mission to determine whether the Red Planet could have supported life was the first step in accessing Earth's nearest neighbor. He said the exploration project could mark the start of the "post-human era" despite the risks associated with traveling into the solar system.

"But I believe, and hope, that some people living now will walk on Mars. Moreover, a century or two from now, small groups of intrepid adventurers may be living there or perhaps on asteroids quite independently from Earth."After the successful mission of curiosity rover.

Lord Rees predicted a "dramatic cultural and technological evolution" on the planet and beyond as scientists learn more about Mars.
Nasa's car-sized robot has the capacity to take samples and record the composition of rocks as well as carry out tests to establish the elements that make up the landscape.
Announcing the success of the mission, Charles Bolden, Nasa administrator, said it would "blaze a trail for human footprints on Mars".

 "Where would this generation be without the space programme? People wouldn't be watching the Olympics on the other side of the world,"

"And, of course, there is the hope that Curiosity will find the answer to that philosophical question – are we alone in the universe?" 

So we have to wait for some more years for this mystery to be solved..........

Radio waves from black hole detected

Surprisingly, scientists have for the first time ever detected the radio waves emanating from a mid-sized black hole, called the HLX-1, around 300 million light years away, located in a galaxy called ESO 243-49.

A team led by Sean Farrell from the University of Sydney's School of Physics, which detected those signals, said these also allow them to estimate the size of the newly discovered black hole.

"Black holes are areas where the matter is so densely squeezed into a small space that it makes gravity pull strongly enough to stop light from escaping," said Farrell, in the journal Nature.

"Astronomers have classified black holes into stellar mass black holes, which are up to tens of times the mass of our sun, and super massive black holes, which are millions to billions of times the mass of our sun," said Farrell, according to a Sydney statement.

"HLX-1 lies in between these two sizes at around 20,000 times the mass of our sun. So we've called it an intermediate mass black hole," said Farrell.

"HLX-1 is located in a galaxy called ESO 243-49 about 300 million light years away from us," he added.

Using the Australia Telescope Compact Array and NASA's Swift satellite, the team that included scientists from France, Britain and the US examined radio emissions during two state transitions of the black hole HLX-1 in 2010 and 2011.

Emil Lenc, Farrell's counterpart at the School of Physics, said: "So, what we tend to see is the X-ray emission and then, a day or two or even a few days later, the source flares up in radio waves."