Naked black widow star with orbital period shorter

Although Earth takes 365 days to complete its orbit, the newly discovered pulsar does PSRJ1311-3430 in just 93 minutes, making it the neutron star in a binary system with the shortest orbital period calculated to date. It is also the first discovery of a millisecond pulsar conducted through its gamma-ray emission.

The peculiarities of this new order they are listed in the journal Science.

How much water is on Earth?

How much water do you think there are on Earth? Approximately 70% of the surface of the Earth is covered by water, and oceans contain about 96.5% of all water from the planet. But there is water in the air as water vapor, in rivers and lakes, ice caps and glaciers, as moisture in the soil and groundwater, even in your body and your dog. However, all that water is in the "small" area of ​​1,385 km in diameter.

The Earth will not end in 2012

On December 31, the Gregorian calendar did something frightening. He spent the years 2011 to 2012. What we experience as the year came to an end? Earthquakes? Globally? A planetary collision? Stranger gravitational effects caused by an alignment with the galactic plane? Is the impact of a comet? 'Lighting' Earth?

As much as I wish it were true finally, it is likely that the New Year celebrations only involve a lot of alcohol and fireworks. It is the beginning of a new year for our calendar. Nothing more, nothing less.