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andrewgreene:

Composite image from the new ALMA radio telescope. One part of the image is 75 million light-years away.

andrewgreene:

Composite image from the new ALMA radio telescope. One part of the image is 75 million light-years away.

scoutit:

Astrophysicists have finally simulated an entire galaxy.
It only took nine months of computing to do it, too!
We were talking about how spiral galaxies form the other day, and simulations like this are key to checking our understanding of the processes behind the Milky Way and others. Essentially, they take all the applicable laws of physics and astronomy, dump them in a computer, let it build a galaxy and see if it matches what we see in real life.

scoutit:

Astrophysicists have finally simulated an entire galaxy.

It only took nine months of computing to do it, too!

We were talking about how spiral galaxies form the other day, and simulations like this are key to checking our understanding of the processes behind the Milky Way and others. Essentially, they take all the applicable laws of physics and astronomy, dump them in a computer, let it build a galaxy and see if it matches what we see in real life.

(Source: jtotheizzoe)

kenyatta:

China and Europe Both Have Plans To Prevent Deadly Asteroid Apophis from Hitting Earth in 2029 (or 2036)

Apophis is a 46 million tonne asteroid that will pass within a hair’s breath of Earth in 2029. However, Apophis’s trajectory is likely to take it through a region of space near Earth known as a keyhole that will ensure the asteroid returns in 2036.
Nobody knows how close Apophis will come on that pass. But if there’s a chance of a collision, we’ll have only 7 years to work out how to avoid catastrophe.
Researchers at Tsinghua University in Beijing say their preference is to use a solar sail to place a small spacecraft into a retrograde orbit and on collision course with Apophis. The retrograde orbit will give it an impact velocity of 90km/s which, if they do this well enough in advance, should lead to a collision large enough to do the trick.
In 2002, the European Space Agency began a program called Don Quijote to find out how best to perform such a deflection.
Don Quijote involves sending two spacecraft to a near Earth asteroid; one to smash into it and the other to watch while in orbit above the impact crater. The goal is to change the asteroid’s semimajor axis by more than 100 metres and to measure the change with an accuracy greater than 1 per cent.

via Technology Review

kenyatta:

China and Europe Both Have Plans To Prevent Deadly Asteroid Apophis from Hitting Earth in 2029 (or 2036)

Apophis is a 46 million tonne asteroid that will pass within a hair’s breath of Earth in 2029. However, Apophis’s trajectory is likely to take it through a region of space near Earth known as a keyhole that will ensure the asteroid returns in 2036.

Nobody knows how close Apophis will come on that pass. But if there’s a chance of a collision, we’ll have only 7 years to work out how to avoid catastrophe.

Researchers at Tsinghua University in Beijing say their preference is to use a solar sail to place a small spacecraft into a retrograde orbit and on collision course with Apophis. The retrograde orbit will give it an impact velocity of 90km/s which, if they do this well enough in advance, should lead to a collision large enough to do the trick.

In 2002, the European Space Agency began a program called Don Quijote to find out how best to perform such a deflection.

Don Quijote involves sending two spacecraft to a near Earth asteroid; one to smash into it and the other to watch while in orbit above the impact crater. The goal is to change the asteroid’s semimajor axis by more than 100 metres and to measure the change with an accuracy greater than 1 per cent.

via Technology Review

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jonwithabullet:

Russian company Orbital Technologies has revealed plans for a space hotel, which could be open by 2016. The hotel room pods will be fitted with binoculars and cameras so guests can enjoy the spectacular intergalactic views and also will act as an emergency bothole for astronauts at the manned space station. Guests will be sent in to the Commercial Space Station via Russian Soyuz rockets.

more info and pics here