How spacecrafts are reusable for new missions also?

[Ganesh Ujwal]

while entering Earth's atmosphere, it totally destroy & comes as single probe, so how spacecraft s are reusable for new missions also?

 

[Borg]

while entering Earth's atmosphere, it totally destroy & comes as single probe, so how spacecraft s are reusable for new missions also?

It's not clear what you're referring to but not everything that is launched into space gets reused. Most satellites will eventually fall back to earth, burn up in the atmosphere and naturally won't get reused. For something the U.S. Space Shuttle, the solid rocket boosters and the shuttle itself were reusable. The external fuel tank was not recycled. Similarly, the crew module for the Orion spacecraft is also designed to be reused. When it's recovered, it is examined, checked for damage and prepared for its next flight.