Posts filed under “Science”

How Big Is The Milky Way?

From Universe Today:

The numbers are pretty astounding. NASA estimates the galaxy at 100,000 light-years across. Since one light year is about 9.5 x 1012km, so the diameter of the Milky Way galaxy is about 9.5 x 1017 km in diameter. The thickness of the galaxy ranges depending on how close you are to the center, but it’s tens of thousands of light-years across.

If you’re looking for the center of the galaxy, gaze at the constellation Sagittarius, which is low on the summer sky horizon for most northern hemisphere residents. The constellation contains a massive radio source known as Sagittarius A*. Astronomers using the Chandra space telescope discovered why this supermassive black hole is relatively weak in X-rays: it’s because hot gas is being pulled inside the nebula, and most of it (99%) gets ejected and diffused.

Kalirai’s group’s research indicates that the Milky Way formed in the following sequence: the halo (including globular star clusters and dwarf galaxies), the inner halo (whose stars were born as a result of this construction) and the outer halo (created when the Milky Way ate up nearby ancient dwarf galaxies).


Source: Universe Today

Category: Science

Mapping the Spread of Drought Across the U.S.

Click for an crazy-cool animated version. Source: NY Times

Category: Digital Media, Science

Bull vs. Bear Debate: Is Biotech Is in a Bubble?

Awesome graphic:   click for ginormous graphic Source: Credit Suisse via Bloomberg    

Category: Markets, Psychology, Science

60 Minutes: Killing Cancer

60 Minutes follows brain cancer patients in a Duke University clinical trial of a therapy that uses a re-engineered polio virus to kill cancer cells

 

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Category: Science, Video

Average Annual Precipitation

Source: Natural News

Category: Science

The Chemical Structure of DNA

Source: Compound Interest

Category: Digital Media, Science

60 Minutes: Modern life’s devices under China’s grip?

From smartphones to cars and defense missiles, modern U.S. life depends on rare earth elements but China dominates the industry

Modern life’s devices under China’s grip?

Source: 60 Minutes

 

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Category: Science, Technology, Video

How Your Brain Morphs When You Learn Physics

Source: Quartz

Category: Science

Source: Washington Post

Category: Politics, Science, UnGuru

NASA is Building a Huge Rocket — But to Where?


Source: Bloomberg

 

continues after the jump

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Category: Science