Crude Oil, is a term used to describe [petroleum](https://en.wikipedia.org/wiki/Petroleum) products harvested from geological formations beneath the Earth's surface. As a fuel they maybe called [hydrocarbons](https://en.wikipedia.org/wiki/Hydrocarbon), hydrocarbons can be found/created in sources other then crude oil but currently crude oil is the primary source on Earth.

**Would a space age be possible on a planet without crude oil resources?** Either Earth after our supply is exhausted or a different planet that never developed crude oil. 

There are two perspectives here:

Could Earth's space age survive the end of the crude oil reserves? 

Could a space age develop on an alien planet never having crude oil (or similar) energy resources?