Apparently this is "The clearest photo of Mercury ever taken."
why isnt everyone getting so excited about this, it is literally another planet look at how beautiful it is stop what your doing and look at how alien like this planet is what is living there oh my god mercury
Only a sheet of ice protects you from falling 1000 feet down this Abyss
Photographer Aaron Huey, who is on assignment for National Geographic, recently shared a picture of a frighteningly deep hole on the Lower Ruth Glacier. The only thing stopping people from plummeting down the 1000 feet drop into the ground is a sheet of ice. One crack, though.
Staring down what could be a 1,000ft deep worm hole through the blue ice of the Lower #RuthGlacier. I was never afraid of the ones full of water, they’d just be cold, but some had no water and it was easy to imagine a long slide to an icy death. #yikes (on assignment for @natgeo in #DenaliNationalPark)
What You Need to Know About Mars Comet Siding Spring
On Sunday, October 19th, Comet C/2013 A1, aka Siding Spring, will pass within about 87,000 miles of the Red Planet.
The distance the comet will be from Mars is less than half the distance between Earth and our moon and less than one-tenth the distance of any known comet flyby of Earth.
Siding Spring, whose core is 0.5 to 5 miles wide, probably formed somewhere between Jupiter and Neptune about 4.6 billion years ago — just a few million years after the solar system began coming together. Scientists believe Siding Spring had a close encounter with one of these planets and was booted out into the Oort Cloud
A million years ago or so, a star passing by the Oort Cloud is thought to have jolted the comet’s orbit again, sending it on its first-ever trip into the inner solar system.
Comets from the Oort cloud are both ancient and rare. Since this is Comet Siding Spring’s first trip through the inner solar system, scientists are excited to learn more about its composition and the effects of its gas and dust on the Mars upper atmosphere.
NASA does not think the comet hit the Red Planet, but comets spew out a trail of dust and gas, and that could damage the fleet of spacecraft orbiting Mars. Just to be safe, NASA will move the Mars Odyssey orbiter, Mars Reconnaissance Orbiter (MRO), and the new Mars Atmosphere and Volatile EvolutioN (MAVEN) to the other side of the planet as the comet approaches.
The Mars orbiters will take pictures and collect data on the comet as it flys by. Several Earth-based and space telescopes, including the Hubble Space Telescope, also will take pictures. Here is the full list of NASA assets observing Siding Spring
The comet was first discovered in January 2013 by Robert McNaught at the Siding Spring Observatory in Australia.