Astronomy Picture of the Day
Astronomy Picture of the Day
Discover the cosmos! [1] Each day a different image or photograph of our
fascinating universe is featured, along with a brief explanation written by a
professional astronomer.
2019 April 28
All of Mercury
Image Credit: NASA [2] / JHU Applied Physics Lab [3] / Carnegie Inst.
Washington [4]
Explanation: Only six years ago, the entire surface [5] of planet Mercury was
finally mapped. Detailed observations of the innermost planet [6] 's
surprising crust began when the robotic have been ongoing since the robotic
MESSENGER spacecraft [7] first passed Mercury in 2008 and continued until its
controlled crash landing [8] in 2015. Previously, much of the Mercury's
surface [9] was unknown as it is too far for Earth-bound telescopes to see
clearly, while the Mariner 10 [10] flybys in the 1970s observed only about
half. The featured video [11] is a compilation of thousands of images of
Mercury [12] rendered in exaggerated colors [13] to better contrast different
surface features. Visible on the rotating world [14] are rays emanating [15]
from a northern impact that stretch across much of the planet, while about
half-way through the video the light colored Caloris Basin [16] rotates into
view, a northern ancient impact feature that filled with lava [17] . Recent
analysis [18] of MESSENGER data indicates that Mercury has a solid inner core
[19] .
Surf the Universe: Click here to see a randomly selected APOD! [20]
Tomorrow's picture: calibrated star cloud
-------------------------------------------------------------------------------
< [21] | Archive [22] | Submissions [23] | Index [24] | Search [25] | Calendar
[26] | RSS [27] | Education [28] | About APOD [29] | Discuss [30] | > [31]
-------------------------------------------------------------------------------
Authors & editors: Robert Nemiroff [32] (MTU [33] ) & Jerry Bonnell [34]
(UMCP [35] )
NASA Official: Phillip Newman Specific rights apply [36] .
NASA Web Privacy Policy and Important Notices [37]
A service of: ASD [38] at NASA [39] / GSFC [40]
& Michigan Tech. U. [41]
----------
Site notes:
[1] archivepix.html
[2] https://www.nasa.gov/
[3] http://messenger.jhuapl.edu/
[4] https://www.ciw.edu/
[5] http://photojournal.jpl.nasa.gov/catalog/PIA1...
[6] https://solarsystem.nasa.gov/planets/mercury/...
[7] http://messenger.jhuapl.edu/the_mission/index...
[8] ap150501.html
[9] ap080319.html
[10] https://www.jpl.nasa.gov/missions/mariner-10/
[11] http://www.youtube.com/watch?v=DmYK479EpQc
[12] https://en.wikipedia.org/wiki/Mercury_(planet...
[13] ap130301.html
[14] https://solarsystem.nasa.gov/planets/mercury/...
[15] ap081008.html
[16] ap080710.html
[17] https://www.youtube.com/watch?v=fmCJSS2YAP0
[18] https://agupubs.onlinelibrary.wiley.com/doi/1...
[19]
https://solarsystem.nasa.gov/news/908/
discovery-alert-a-closer-look-at-mercurys-spin-and-gravity-reveals-the-planets-
inner-solid-core/
[20] random_apod.html
[21] ap190427.html
[22] archivepix.html
[23] lib/apsubmit2015.html
[24] lib/aptree.html
[25] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apo...
[26] calendar/allyears.html
[27] /apod.rss
[28] lib/edlinks.html
[29] lib/about_apod.html
[30] http://asterisk.apod.com/discuss_apod.php?dat...
[31] ap190429.html
[32] http://www.phy.mtu.edu/faculty/Nemiroff.html
[33] http://www.phy.mtu.edu/
[34] https://antwrp.gsfc.nasa.gov/htmltest/jbonnel...
[35] http://www.astro.umd.edu/
[36] lib/about_apod.html#srapply
[37] https://www.nasa.gov/about/highlights/HP_Priv...
[38] https://astrophysics.gsfc.nasa.gov/
[39] https://www.nasa.gov/
[40] https://www.nasa.gov/centers/goddard/
[41] http://www.mtu.edu/
--- Mystic BBS v1.12 A43 (Windows/32)
* Origin: FIDONet - The Positronium Repository (1:393/68)
|
Earth & Space Sci-Tech + NASA... 
