A Rare Tansit of Mercury:

@ The planet of Mercury skipped across the vast, glaring face of the sun in a rare celestial transit. 

# Facts about mercury.

@ Mercury is nearly tidally locked to the Sun – also known as a gravitational lock.

@ Over time this has slowed the rotation of the planet to almost match its orbit around the Sun.

@ It is one of five planets that are visible to the naked eye.

@  After the Earth, Mercury is the second densest planet.

@ Mercury has no moons or rings

@ Mercury is only the second hottest planet.

@ The orbit of Mercury was important in proving Albert Einstein‘s theory of General Relativity.

@ Mercury has a very thin atmosphere.

@ Only two spacecraft have ever visited Mercury: they are Mariner 10 and Messenger.

#science #Facts