Home » News & Blogs » 5 questions you were too embarrassed to ask about the expanding Universe
Bookmark and Share
Starts With a Bang!

5 questions you were too embarrassed to ask about the expanding Universe

29 Sep 2017, 14:01 UTC
5 questions you were too embarrassed to ask about the expanding Universe NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)
(200 words excerpt, click title or image to see full post)

An ultra-distant view of the Universe shows galaxies moving away from us at extreme speeds. At those distances, galaxies appear more numerous, smaller, less evolved, and to recede at great redshifts compared to the ones nearby. Image credit: NASA, ESA, R. Windhorst and H. Yan.From what it’s expanding into to whether things are moving faster-than-light, this clears up some of our greatest misconceptions.“The more clearly we can focus our attention on the wonders and realities of the universe about us, the less taste we shall have for destruction.” -Rachel CarsonWhen we look out at the distant Universe, we continue to see galaxies everywhere, in all directions, for millions and even billions of light years. With an estimated two trillion galaxies potentially observable to humanity, the sum total of what’s out there is grander and more spectacular than most of us can hope to imagine. One of the most puzzling facts is that of all the galaxies we’ve ever observed, they all obey (on average) the same rule: the farther away they are from us, the faster they appear to be moving away from us. This discovery, made by Edwin Hubble and his collaborators back in the 1920s, led us to ...

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod