by APOD Robot » Mon Feb 23, 2015 5:11 am
The Milky Way Over the Arizona Toadstools
Explanation: Which is older -- the rocks you see on the ground or the light you see from the sky? Usually it's the rocks that are older, with their origin sentiments deposited well before light left any of the stars or nebulas you see in the sky. However, if you can see, through a telescope, a distant galaxy far across the universe -- further than
Andromeda or spiral galaxy
NGC 7331 (inset) -- then you are seeing light even more ancient. Featured here, the central disk of our
Milky Way Galaxy arches over Toadstool
hoodoos rock formations in northern
Arizona,
USA. The
unusual Toadstool rock caps are relatively hard
sandstone that wind has eroded more slowly than the softer sandstone underneath. The green bands are
airglow, light emitted by the stimulated air in
Earth's atmosphere. On the lower right is a time-lapse camera set up to capture the
sky rotating behind the picturesque foreground scene.
[/b]
[url=http://apod.nasa.gov/apod/ap150223.html][img]http://apod.nasa.gov/apod/calendar/S_150223.jpg[/img] [size=150]The Milky Way Over the Arizona Toadstools[/size][/url]
[b] Explanation: [/b] Which is older -- the rocks you see on the ground or the light you see from the sky? Usually it's the rocks that are older, with their origin sentiments deposited well before light left any of the stars or nebulas you see in the sky. However, if you can see, through a telescope, a distant galaxy far across the universe -- further than [url=http://apod.nasa.gov/apod/ap140730.html]Andromeda[/url] or spiral galaxy [url=http://apod.nasa.gov/apod/ap141218.html]NGC 7331[/url] (inset) -- then you are seeing light even more ancient. Featured here, the central disk of our [url=http://www.nasa.gov/mission_pages/GLAST/science/milky_way_galaxy.html]Milky Way Galaxy[/url] arches over Toadstool [url=https://www.youtube.com/watch?v=8gqnDHjm5yw]hoodoos[/url] rock formations in northern [url=http://en.wikipedia.org/wiki/Arizona]Arizona[/url], [url=https://www.cia.gov/library/publications/the-world-factbook/geos/us.html]USA[/url]. The [url=http://www.blm.gov/ut/st/en/fo/grand_staircase-escalante/Recreation/hiking___backpacking/Toadstools.html]unusual Toadstool rock caps[/url] are relatively hard [url=http://en.wikipedia.org/wiki/Sandstone]sandstone[/url] that wind has eroded more slowly than the softer sandstone underneath. The green bands are [url=http://en.wikipedia.org/wiki/Airglow]airglow[/url], light emitted by the stimulated air in [url=http://en.wikipedia.org/wiki/Atmosphere_of_Earth]Earth's atmosphere[/url]. On the lower right is a time-lapse camera set up to capture the [url=http://apod.nasa.gov/apod/ap110601.html]sky rotating[/url] behind the picturesque foreground scene.
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