Hubblecast 23 Special: Seeing the invisible

The Universe is a black void, with a scattering of stars, nebulae and galaxies or so it appears to observers using visible light. But if we include other forms of radiation invisible to us, the picture changes completely: clouds of interstellar hydrogen gas, emitting radio waves; stellar nurseries, glowing in the infrared; explosive outbursts of gamma rays and the all-sky background hiss of the Big Bang, diluted by almost fourteen billion years of cosmic expansion. So how do astronomers learn about the unseen Universe? By building telescopes and detectors that can see the invisible. Watch this Hubblecast episode and find out more.

Category:

Science & Technology

Tags:

• Hubblecast
• eyes
• on
• the
• skies

[SimKitty1221]

Another stunning episode of everyone's (well, mine) favorite show :) Thanks again for uploading rshida :)

[oscarlithgow]

A+++++

[berzu21]

Once again the nature suprise us beyond our wildest imaginasition.

[TearyEyesAnderson]

I feel cheated :s, we didn't get to hear the proverbial, "Once again, Nature has shown us more then we ever imaged", from Dr. J :s, lol. I find it quite interesting to hear how telescopes have changed over the years, I first heard of the Large Hadron Collider, not as a Big Bang machine, but simply as the biggest microscope that got me interested.

[arayia6girmay]

i love the videos

[jimbeas]

Magnificent!

[anshumang1]

just discovered these vids, amazing collection. still i dint know ESA had anything to do with Hubble, I thought that was NASA project.

[superfisto]

I love these videos.