Astronomy
Course Description
Astronomy
The scientific study of the universe and the objects in it, including stars, planets, nebulae, and galaxies. Astronomy deals with the position, size, motion, composition, energy, and evolution of celestial objects. Astronomers analyze not only visible light but also radio waves, x-rays, and other ranges of radiation that come from sources outside the Earth's atmosphere.
Upcoming Assignments See all
Could not find any upcoming assignments due.
Posts
Gravitational Waves Hit The Late Show
The Gravity of the Situation
How Much Does Planet Earth Weigh?
Why is our universe fine-tuned for life?
Light Years explained
In this image taken by the Hubble Space Telescope, the galaxy NGC 4380 looks like a special effect straight out of a science fiction or fantasy film, swirling like a gaping portal to another dimension.
In the grand scheme of things, though, the galaxy is actually quite ordinary. Spiral galaxies like NGC 4380 are common in the universe. These colossal collections of stars, often numbering in the hundreds of billions, are shaped like a flat disk, sometimes with a rounded bulge in the center. Graceful spiral arms outlined by dark lanes of dust wind around the bulging core, which glows brightly and has the highest concentration of stars in the galaxy.