Planetary Pros: Biofuels, which are created from renewable sources like plants and algae, offer the potential for a more sustainable and environmentally friendly alternative to traditional rocket fuels.
They can reduce greenhouse gas emissions and dependence on fossil fuels. A great benefit is that we already have the means to produce them which could lower costs.
Cosmic Cons: Biofuels for space rockets are still in the early stages of development and face several challenges.
The fuel would need to be at a very high energy density for to be able to propel rockets efficiently – something that’s tricky to achieve.
Also making enough to meet demands of space missions can be challenging as it requires a huge quantity of biomaterial.
It might just be too tricky and expensive to use widescale for space rockets… although trials and research continue.