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Астронет: Астрономическая картинка дня Меркурий пересекает спокойное Солнце http://variable-stars.ru/db/msg/1559020/eng |
Credit & Copyright: NASA,
SDO,
NASA's
Science Visualization Studio;
Music:
Gustav Sting
(Kevin MacLeod) via YouTube
Explanation:
What's that black dot crossing the Sun?
The planet Mercury.
Mercury
usually passes over or under the
Sun,
as seen from
Earth,
but last month the Solar System's innermost planet appeared to go just about
straight
across the middle.
Although witnessed by planet admirers across
the globe,
a particularly clear view was captured by the
Solar Dynamics Observatory (SDO) in
Earth orbit.
The featured video
was captured by the
SDO's HMI instrument in
a broad range of visible light, and
compresses
the 5 1/2 hour transit into about 13 seconds.
The background Sun was unusually
quiet -- even for being near
Solar Minimum
-- and showed no sunspots.
The next
solar transit by Mercury will
occur in 2032.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.