APOD: 2026 March 18 Б Cygnus and the Solitary Tree
Explanation:
A lone tree stands in a quiet meadow in
Guadalajara,
Spain,
silhouetted against
the Cygnus region
rising above like flames in the night sky.
This deep night skyscape is a composite of exposures that reveals a range of brightness
and color human eyes can't quite see on their own.
Spanning over a thousand times the
angular
size
of the full moon,
Cygnus
sets the sky afire with
active
star formation
where clouds of gas and dust collapse under gravity until
nuclear fusion
ignites and new stars are born.
These stars
ionize
the surrounding hydrogen gas, causing it to
glow
crimson,
while tendrils of
interstellar dust
absorb some of that light and cast dark shadows across the sky.
Cygnus is a trove of celestial treasures, notably the
Veil,
Crescent, and
Pelican nebulae,
as well as
Cygnus X-1,
the first confirmed
black hole.
Cygnus continues to yield fresh science, including
a new three-dimensional
model
of the
Cygnus Loop
made possible by
the Chandra X-ray
Observatory.
Almost Hyperspace:
Random APOD Generator
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.
