Earth Makes Closest Approach to Sun

The orbital milestone is known as perihelion, and it marks the time when the distance between the Earth and the sun is at its smallest. The event occurs every year in early January, and in 2012 it took place on January 4 at 8 p.m. EST. On average, the Earth orbits the sun at a distance of about 93 million miles (150 million kilometers).

Icy Moon Enceladus Floods Saturn

New study show that an icy moon around Saturn is showering rain water onto its home planet, creating a vast halo of water vapor around the ringed world. Enceladus is the only known moon in the solar system which influence the chemical composition of its parent planet.Enceladus has a frigid, icy surface but an active interior, particularly at its south pole.

Pluto’s New Fourth Moon

With the help of NASA’s Hubble Space Telescope astronomers discovered a fourth moon orbiting the icy dwarf planet Pluto. The tiny, new satellite, temporarily designated P4, was uncovered in a Hubble survey searching for rings around the dwarf planet. The new moon is the smallest discovered around Pluto

New Exoplanet 55 Cancri f

Astronomers have discovered that one of the planets in binary star system 55 Cancri is potentially habitable.The study’s authors, Kaspar von Braun of the California Institute of Technology and his colleagues describe the properties of the binary star system 55 in the constellation of Cancer, called 55 Cancri f.

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