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RIPBritish astronomer and broadcaster Sir Patrick Moore has died, aged 89, his friends and colleagues have said.
He "passed away peacefully at 12:25 BST this afternoon" at his home in Selsey, West Sussex, they said in a statement.
Sir Patrick presented the BBC programme The Sky At Night for over 50 years, making him the longest-running host of the same television show ever.
He wrote dozens of books on astronomy and his research was used by the US and the Russians in their space programmes.
The river stretches more than 400 kilometers from its 'headwaters' and flows into a large sea.
It is the first time astronomers have seen a river system this large and in such high resolution anywhere beyond Earth, according to the European Space Agency.
As much as I <3 Titan, I'd give up all interplanetary probes & etc for a permanent base on the Moon.Stuff like this is why i am tired of repeatedly going to Mars all the time.