scientists use spacecraft without people to explore space because scientists need to know more about space and the solar system
A spacecraft without people on board is called an unmanned spacecraft or a robotic spacecraft. These types of spacecraft are operated remotely from Earth or operate autonomously.
Astronauts are people who travel in space.
Some scientists are people that explore the world and try to tell us about the planet but we don't understand!
Hi, Unfortunately, they don't know how to land the spacecraft. All they do know is that the people on board won't die!¬ Hope it helps, Cheekyellisa
A space shuttle is a reusable spacecraft designed for human spaceflight, carrying astronauts to and from space. A space probe is an unmanned spacecraft designed to explore other planets, moons, or asteroids without carrying humans. Spacecraft is a general term that encompasses both manned (space shuttles) and unmanned (space probes) vehicles designed for space exploration.
experiment and explore without commitment
The most obvious answer to your question is the fact that people have to return to earth, while an unmanned craft can stay in space infinitely. Manned spacecraft require things like oxygen, water, food and communications equipment, none of which are required by an unmanned spacecraft. That means unmanned spacecrafts can be sent into space for a fraction of the cost of a manned spacecraft. So basically, it's much cheaper and safer to send unmanned spacecrafts to explore the universe.
scientists can study the layers of ice to see how the earth changed throughout the decades.
People can't survive that type of pressure that far down in the water.
The same reason why all spacecrafts have parachutes: During reentry into the Earth's atmosphere, the spacecraft goes extremely fast. And if there are people in the spacecraft and no parachute, they would slam into the water at that speed and it would be like hitting concrete. So without a parachute, everyone on the spacecraft would be killed.
They fly in a rocket People haven't left Earth orbit since 1972. But, when humans did go to the Moon (between 1969 and 1972), the only vehicles to take them were (boosters) Saturn V rockets, and (spacecraft) Apollo Command and Service Modules (CSM) and Lunar Modules (LM). To date, only NASA astronauts have been to the Moon.
Space probes without crew can be more cost-effective, smaller, and lightweight compared to manned spacecraft. They can gather scientific data in extreme space environments, such as outer reaches of the solar system, where sending humans is currently not feasible. They also eliminate the risks associated with human spaceflight, allowing for longer missions and more sophisticated scientific studies.