File:Hubblecast 23 Special.webm

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Original file ‎(WebM audio/video file, VP8/Vorbis, length 9 min 13 s, 1,920 × 1,080 pixels, 3.9 Mbps overall, file size: 257.15 MB)

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English: In this new Hubblecast episode, Dr. J guides us through the fifth chapter of Eyes on the Skies, the International Astronomical Union's movie celebrating the telescope on its 400th anniversary in 2009.

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.

Credit:ESA/Hubble (M. Kornmesser & L. L. Christensen)
Date
Source Hubblecast 23 Special: Seeing the invisible
Author see above
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File history

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Date/TimeThumbnailDimensionsUserComment
current15:17, 8 March 20189 min 13 s, 1,920 × 1,080 (257.15 MB)ComputerHotline (talk | contribs)Imported media from https://cdn.spacetelescope.org/archives/videos/hd_1080p25_screen/hubblecast23a.mp4

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Transcode status

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Format Bitrate Download Status Encode time
VP9 1080P 2.94 Mbps Completed 02:48, 29 August 2018 36 min 32 s
Streaming 1080p (VP9) 2.82 Mbps Completed 19:46, 1 March 2024 12 s
VP9 720P 1.39 Mbps Completed 02:31, 29 August 2018 19 min 38 s
Streaming 720p (VP9) Not ready Unknown status
VP9 480P 760 kbps Completed 02:24, 29 August 2018 13 min 14 s
Streaming 480p (VP9) 644 kbps Completed 14:15, 18 March 2024 4.0 s
VP9 360P 464 kbps Completed 02:20, 29 August 2018 8 min 53 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 313 kbps Completed 02:18, 29 August 2018 7 min 44 s
Streaming 240p (VP9) 196 kbps Completed 08:10, 2 January 2024 2.0 s
WebM 360P 587 kbps Completed 15:25, 8 March 2018 8 min 15 s
Streaming 144p (MJPEG) 830 kbps Completed 00:41, 15 November 2023 28 s
Stereo (Opus) 112 kbps Completed 02:44, 24 November 2023 9.0 s
Stereo (MP3) 128 kbps Completed 21:02, 9 November 2023 19 s

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