What happens to old satellites after their mission ends?

In one line

The rule

After a satellite's mission ends, it is either brought down safely or left in orbit, becoming space debris (junk).

Let's understand it simply

Imagine you fly a kite. When you are done, you bring it down, or sometimes it gets stuck in a tree and stays there. Satellites are like kites in space. When their work is over, we try to bring them down safely. But sometimes, they just stay up there, floating around.

How it works

1. When a satellite finishes its job, scientists decide what to do with it.
2. If it is close to Earth, they use its engines to push it down into the atmosphere.
3. As it falls, it burns up because of the air, like a Diwali rocket.
4. Some satellites are too far or have no fuel left. They stay in space and become space junk.
5. Big satellites in high orbits are sometimes moved to a 'graveyard orbit' — a safe place away from working satellites.

The story behind it

When people first sent satellites into space, they did not think much about what would happen after. But as more and more satellites were launched, old ones started to crowd space. Scientists then made rules to handle old satellites safely, to avoid accidents.

Where you see it in real life

• Falling satellites: Sometimes, news says a satellite will fall to Earth. Most of it burns up, but small pieces may reach the ground.
• Space junk: There are thousands of dead satellites and broken parts circling Earth, like old toys left in a playground.
• ISRO missions: Indian satellites like INSAT are moved to graveyard orbits after their work is done.
• International Space Station (ISS): Old parts are sent down to burn up in the atmosphere.
• Satellite launches: New launches must plan what to do with the satellite at the end of its life.

Why it matters

• Safety: Space junk can crash into working satellites, causing damage.
• Clean space: Too much junk makes it hard to launch new satellites.
• Earth safety: We must make sure falling satellites do not hurt people or property.
• Future missions: Clean orbits are needed for future space travel and satellites.

Common mistakes

• Thinking all old satellites fall to Earth — many stay in space as junk.
• Believing satellites always burn up completely — sometimes small bits reach the ground.
• Forgetting that graveyard orbits exist — not all satellites are left randomly in space.

Remember it

Old satellites either burn up in the air or become space junk.