“That's here.
That's home.
That's us.”
–
Carl Sagan
Seeing Earth from space can alter an astronauts’
cosmic perspective,
a mental shift known as the “Overview Effect.”
First coined by space writer Frank White in 1987,
the Overview Effect is described as a feeling of awe for our home planet and a sense of responsibility for taking care of it.

See Earth from the vantage point of our astronauts in these perspective-changing views.

Credit:
NASA #NASA #space #science #earth

A trail of night lights ✨
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✨

This image compiles over 400 time-lapse photos taken by @astro_christina from the International Space Station (@ISS),
as the station traveled from Namibia toward the Red Sea on July 5,
2019.⁣
⁣
Here,
stationary features like cities appear as pale yellow-white dotted streaks;
many of the thinner dotted lines with darker orange hues are seasonal fires burning.
Northward,
you can see bright white lightning flashes from thunderstorms and above the horizon,
a faint green-yellow tracing of the upper atmosphere known as airglow.⁣
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Image Credit:
NASA⁣
Caption:
Andrea Meado,
Jacobs Technology⁣
⁣ #startrails #stars #space #airglow #timelapse #nasa⁣

⭐
➡️💥
A Chandra supernova in the sky...
This Chandra X-ray Observatory (@nasachandraxray)
image captures a star in the constellation Cassiopeia that was obliterated by an explosion.
What's left behind is this multicolored,
three-dimensional object:
a supernova remnant.
⁣
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Tycho's supernova remnant —
named for Danish astronomer Tycho Brahe,
among the first to spot it in 1572 —
was a Type Ia,
which occurs when a white dwarf star pulls material from,
or merges with,
a nearby companion star until a violent explosion is triggered,
sending debris hurtling into space.⁣
⁣
The image is providing clues to what caused the remnant's intriguing pattern of bright clumps and fainter areas.
To emphasize the clumps in the image and the three-dimensional nature of Tycho,
scientists selected two narrow ranges of X-ray energies to isolate material (silicon,
colored red)
moving away from Earth,
and moving towards us (also silicon,
colored blue).
The other colors in the image (yellow,
green,
blue-green,
orange and purple)
show a broad range of different energies and elements,
and a mixture of directions of motion.
⁣
Image Credit:
X-ray:
NASA/CXC/RIKEN &
GSFC/T.
Sato et al;
Optical:
DSS⁣
⁣ #supernova #explosion #cosmos #universe #observatory