Why is Mars rovers lifespan is only 90 days ?

"Dan DeConinck" wrote in message
m...
Hello ,

Why is Mars rovers lifespan is only 90 days ?

Com Sats last years.
Pioneer is 20+ yrs and still talking.

Thanks Dan



I always wondered why they couldn't send a rover with a better power source
than solar panels. Perhaps RITEG would work better and be more durable?

Of course, if NASA sent up a probe that lasted for years and not months,
they might not be able to justify sending as many probes as they do.

Doc