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With Earth’s atmosphere acting as a near-total shield against high-energy γ-rays, astronomers have traditionally relied on space telescopes to detect them. But now they hope an ambitious ground-based telescope, the Cherenkov Telescope Array, will help them to solve two mysteries: the origin of ultra-high-energy cosmic rays and the nature of dark matter.  http://www.nature.com/news/high-energy-%CE%B3-ray-astronomy-comes-back-to-earth-1.13230?WT.mc_id=PIN_NatureNews

Planned ground-based telescope array could shed light on dark matter and the origin of cosmic rays.

When you see photos of the Earth from far away, the implications may not immediately be clear. Listen as Carl Sagan breaks it down.

The Single Most Mind-Altering Photograph Humanity Has Ever Taken

It Might Be The Most Mind-Boggling Photograph Humanity Has Ever Taken: the pale blue dot, earth photographed by Voyager One!

Dark matter is an invisible material that emits or absorbs no light but betrays its presence by interacting gravitationally with visible matter. This image from Dark Universe shows the distribution of dark matter in the universe, as simulated with a novel, high-resolution algorithm at the Kavli Institute of Particle Astrophysics & Cosmology at Stanford University and SLAC National Accelerator Laboratory.

Distribution of dark matter in the universe, as simulated with a novel, high-resolution algorithm at the Kavli Institute of Particle Astrophysics & Cosmology (KIPAC) at Stanford University and SLAC.

#ASTRONOMY Los mejores sitios para ver estrellas: 1) http://blogs.elpais.com/viajero-astuto/2012/05/los-mejores-sitios-para-ver-estrellas-.html 2) https://www.youtube.com/watch?v=mvdVmCxvpk0

Los mejores sitios para ver estrellas

Gorgeous Telescope Timelapse Makes You Feel Like You’re Standing In Chile

Einstein is Right! Gravity Bends Light - The General Theory of Relativity

General relativity, or the general theory of relativity, is the geometric theory of gravitation published by Albert Einstein in 1916 and the current descript.

Missing galaxy mass found : Nature News & Comment

Two new studies use 'gravitational lensing' to account for missing mass from some galaxy clusters. This means that some of the more exotic hypotheses to explain their missing mass may be unnecessary.

The Eagle Nebula is a vast stellar nursery located some 7,000 light years from our solar system. The nebula is a region of intense star formation that is in the process of forming a star cluster.This cloud of gas and dust is located within the constellation of Serpens. via Palomar Observatory

The Eagle Nebula is a vast stellar nursery located some light years from…

“I’ve observed lots of comets and I’ve never seen anything as weird as this one” The Hubble Space Telescope has spotted a comet with SIX tails. The asteroid may have been set spinning by the force of sunlight hitting it - and its rapid spin means its shaking off dust from its surface, which is then spinning into these tails. http://www.nature.com/news/hubble-space-telescope-spots-unprecedented-comet-with-six-tails-1.14133?WT.mc_id=PIN_NatureNews

Hubble Space Telescope spots unprecedented asteroid with six tails

Sunset.  KN from space.

NASA astronaut Karen Nyberg took this photo of the sun setting behind the Earth's limb from the ISS on Sunday, June

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