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Black Hole
Inside of the event horizon, all paths bring the particle closer to the center of the black hole. It is no longer possible for the...


Comet
NASA is developing a comet harpoon for returning samples to Earth


Australia
Comet C/2006 P1 (McNaught) taken from Victoria, Australia 2007

Comet
Orbits of Comet Kohoutek (red) and Earth (blue), illustrating the high eccentricity of its orbit and its rapid motion when close to the Sun.


Comet
Comets – nucleus, coma and tail: Hale–Bopp seen from Earth in 1997


Star
This view contains blue stars known as "Blue stragglers", for their apparent location on the Hertzsprung–Russell diagram


Star
False color imagery of the Sun, a G-type main-sequence star, the closest to Earth


Moon
The Ina formation, 2009


Moon
GRAIL's gravity map of the Moon


Moon
Lunar south pole
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