Tags » Spiral Galaxy

Hubble’s Majestic Spiral in Pegasus

This NASA/ESA Hubble Space Telescope image shows a spiral galaxy known as NGC 7331.

Source: Hubble’s Majestic Spiral in Pegasus

Space Images

How many types of galaxies?

Galaxies are indeed big,they are hundreds of thousands of light years across and full of dust and gases,containing billions of stars.For instance our own Milkyway galaxy is 100,000 light years across and contains approximately 250 billion stars and a lot of uncertainty.Sometimes Nebulas were mistakely labelled as galaxies by astronomers. 342 more words


Weighing the Milky Way Galaxy

Like early explorers mapping the continents of our globe, astronomers are busy charting the spiral structure of our galaxy, the Milky Way. Using infrared images from NASA’s Spitzer Space Telescope, scientists have discovered that the Milky Way’s elegant spiral structure is dominated by just two arms sweeping off the ends of a central bar of stars. 1,847 more words