Space exploration
Videos
Space exploration is the physical investigation of outer space by uncrewed robotic space probes and through human spaceflight.
Buzz Aldrin taking a core sample of the Moon during the Apollo 11 mission
Self-portrait of Curiosity rover on Mars's surface
A V-2 Rocket in the Peenemünde Museum in Germany
Model of a Russian Vostok spacecraft
Outer space
Videos
Outer space, or simply space, is the expanse that exists beyond Earth's atmosphere and between celestial bodies. It contains ultra-low levels of particle densities, constituting a near-perfect vacuum
Being essentially empty, outer space allows the earliest (redder) galaxies to be viewed without obstruction, as in the Webb's First Deep Field image.
A wide field view of outer space as seen from Earth's surface at night. The interplanetary dust cloud is visible as the horizontal band of zodiacal light, including the false dawn (edges) and gegenschein (center), which is visually crossed by the Milky Way
Because of the hazards of a vacuum, astronauts must wear a pressurized space suit while outside their spacecraft.
Conventional anti-satellite weapons such as the SM-3 missile remain legal under the law of armed conflict, even though they create hazardous space debris