Radioisotope thermoelectric generator
A spacecraft that seems to be motionless in deep space is given some type of quick push.
The Deep Space Network (DSN) is a network of antennas and communication facilities used by space missions to communicate with spacecraft in deep space. It allows for continuous communication with spacecraft, enabling the transmission of data, commands, and navigation signals.
As of 2021, spacecraft have studied five comets up close: Halley's Comet (by the European Space Agency's Giotto spacecraft), Comet Borrelly (by NASA's Deep Space 1), Comet Wild 2 (by NASA's Stardust spacecraft), Comet Tempel 1 (by NASA's Deep Impact spacecraft), and Comet 67P/Churyumov-Gerasimenko (by the European Space Agency's Rosetta spacecraft).
Spacecraft like the Voyager.
We see deep into space by using optical or radio telescopes, either from the Earth's surface, from satellites orbiting above us, or carried out into space on an unmanned spacecraft.
The Hubble Space Telescope is a space observatory, not a spacecraft designed to carry people. It is operated remotely from Earth and was specifically built for a single purpose: astronomical observations.
The three main types of spacecraft are crewed spacecraft, uncrewed spacecraft, and robotic spacecraft. Crewed spacecraft are designed to carry astronauts and support human life, such as the International Space Station or the Space Shuttle. Uncrewed spacecraft operate without human presence, often used for scientific research, communication, or navigation, like satellites. Robotic spacecraft are specifically designed for exploration and tasks in environments where humans cannot go, such as Mars rovers or deep-space probes.
It depends on the spacecraft and its mission; for Earth orbital satellites, solar arrays are used to charge batteries for power. For deep space missions (e.g., Voyager, Cassini, Galileo) spacecraft use Radioisotope Thermoelectric Generators (RTGs) for power generation.RTG's are the most reliable and longest lasting, as they provide both power and heat in the deep cold of space, and do not require ambient light sources (limited in deep space) to absorb/convert light to electricity,
Satellites: Used for communication, Earth observation, and navigation. Space probes: Used for exploring celestial bodies in our solar system. Crewed spacecraft: Used to transport astronauts to and from the International Space Station or for deep space missions.
Spaceships run on various sources of energy, such as rocket fuel like liquid hydrogen and liquid oxygen for chemical rockets, or nuclear power systems like radioisotope thermoelectric generators (RTGs) or nuclear reactors for deep space missions. Solar panels can also be used to generate electricity for powering spacecraft systems.
As far as is known to the public, the only living creatures to have orbited the moon so far have been 27 astronauts on 9 Apollo missions. Two steppe tortoises, in September 1968, were aboard the Soviet Union's Zond 5. This was an unmanned spacecraft that made a circumlunar flight and returned to earth.
As of now, there have been no reported crashes in space where a spacecraft has collided with another object in the void of space. However, there have been instances of spacecraft accidents during launch or re-entry, such as the Space Shuttle Challenger and Columbia disasters. Additionally, satellites and space debris can collide, but these events occur in orbit rather than in deep space. Overall, while space travel carries risks, no crashes have occurred in the traditional sense of a vehicle crashing while in the vacuum of space.