Astronomical unit has been changed

At the meeting in Beijing, the International Astronomical Union conference, present her scientists decided that would make a redefinition of the astronomical unit. One astronomical unit will continue to be equal to the distance from the Earth to the Sun, but at the same time, scientists now will be secure the monotonous exact evaluation. Now assumed the value of one astronomical unit is equal to 149597870700 meters.

Investigated such a supernova in 1604

Ray space telescope NASA Chandra, began to study the outstanding traces of an antique supernova explosion, which he observed by Io Gunn Kepler .

For the first time, a mention about this supernova are dated 1604. When the night sky is a new star in the place where previously there was none. This event recorded many of the astronomers of the time, including Johannes Kepler.

Planet of diamonds

U.S. scientists have found a diamond weigh several quadrillion carat. 

True, it is located far away from the Earth, and exceeds it in size by half.

The astronomers studied the planet that orbits a star that is visible to the naked eye, is twice the size of Earth and is essentially a giant diamond.