New View of the globular cluster 47 Tucanae

Globular clusters 47 Tucanae are huge spherical cloud of old stars held together by gravity. They are turning around the cores of galaxies, and satellites orbiting Earth. These groups of stars contain very little gas and dust - it is believed that most of the cluster has been driven by winds and explosions of stars it contains, or has been torn by the interstellar gas has been interacting with the cluster. Any remaining material coalesced into stars billions of years ago.

Reverse Effect: Eruption of climate

The eruption can cause climate change, no doubt. Supervolcanoes that send to the stratosphere many tons of ash may affect the global climate. But it appears that perhaps the reverse effect: the German and American scientists have found evidence that climate can change the activity of volcanoes.

This is something new! However, researchers at Harvard University in collaboration with the center GEOMAR know what they say on their side - the results of the analysis of volcanic deposits in the last million years.

Mars rover Curiosity explores lowland Yellowknife Bay

The Mars rover Curiosity, a key element of the mission Mars Science Laboratory (MSL) NASA resumed traffic January 3 and drove right up to the twisting geological formation, called Snake river ("Zmeistaya river").

Snake River is a thin curved line of dark rock, running through between flat slabs of lighter rocks and towering over the sand. Curiosity rover science team plans to study this form of relief in detail, before switching to other nearby rocks.

Maximum of solar activity in 2013 is expected to be the weakest

Maximum activity this year is likely to be the weakest in at least the last 100 years, according to NASA scientists observing the nearest star to the Earth every day.

The number of sunspots is low, despite the fact that the sun is close to the maximum of its 11-year activity cycle. Furthermore, the intensity of radio waves, usually pointing to the high solar activity, also significantly reduced.

The first direct detection sheds light on dark galaxies

Most people think of the giant galaxies as islands of stars, gas and dust that block our universe with its light. Theory, however, predicts that there are other types of galaxies, devoid of stars, and consisting mainly of dense gas. These "dark" galaxies you can not see on the black background of the universe.

Now an international team of astronomers has found a few bright galaxies, watching the glow of hydrogen these galaxies, UV-induced nearby quasar HE0109-3518.

Prepare Shock: Dangerous Mars

If ever people stay on Mars at least three years, they certainly have to survive the fall of a large meteorite hit and capacity of a megaton of TNT. 

One obvious way to assess the chances of a future encounter with a meteorite impact - to look at the past. However, this task is not so simple, because the density and size of craters, survived for a long time, depending on many factors. 

Preparing a mission to Jupiter's moon

From this year on Mars rover new American works Curiosity, in the future to join him orbiter Maven, in 2016 - the lander Insight  and in addition to that on the 2020 NASA Mars rover is scheduled for launch next. But this perspective is not limited. Among other objectives the fourth largest moon of Jupiter Europe .