Is there life on other planets?

Considering the number of stars in the universe, even if only a few of them have planets, it seems highly unlikely that Earth is the only planet supporting life.

However, it seems that all life on Earth evolved from a single ancestor, suggesting that abiogenesis is extremely rare. It is possibly so rare that it has only ever happened once anywhere?

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CharlieZ · 70-79, M

It´s entirely posible or it seems so.
Quite probable indeed.
May be there are "local" factors (local at the scale of the Universe) involved in the details of how life emerged in a certain planet.
Details that may not inhibit the occurence of life given the main causal factors. But may introduce variations in a path dependent chain of physical events.
Includding, among others, the "local" probability of an origin in abiogenesis.

suzie1960 · 61-69, F

@CharlieZ Good points. It could be rare enough to have occurred only once on this planet but many times throughout the universe.