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Credit & Copyright: Peter Ward
(Barden Ridge Observatory)
Explanation:
Perihelion
for 2023,
Earth's closest approach to the Sun,
was on January 4 at 16:17 UTC.
That was less than 24 hours after this
sharp image of the Sun's
disk
was recorded with telescope and
H-alpha filter from Sidney, Australia, planet Earth.
An
H-alpha filter
transmits a characteristic red light from hydrogen atoms.
In views of the Sun it emphasizes the Sun's chromosphere,
a region
just above
the solar photosphere or normally visible solar surface.
In this H-alpha image of the
increasingly
active Sun
planet-sized sunspot regions are dominated
by bright splotches called plages.
Dark filaments of plasma
snaking across the solar disk transition
to bright prominences when seen
above the solar limb.
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January February March April May June July August September October November December |
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: perihelion - Sun
Publications with words: perihelion - Sun
See also:
- APOD: 2024 February 19 Á Looking Sideways from the Parker Solar Probe
- Circling the Sun
- APOD: 2023 December 11 Á Solar Minimum versus Solar Maximum
- APOD: 2023 November 19 Á Space Station, Solar Prominences, Sun
- APOD: 2023 October 25 Á Gone in 60 Seconds: A Green Flash Sunset
- Circular Sun Halo
- APOD: 2023 August 1 Á Monster Solar Prominence