Venus has always been thought to be inhospitable. Which is why we have been pinning all our hopes on Mars. But, recently, a gas called phosphine has been spotted in the clouds above Venus. Phosphine is produced by microbes here on Earth, which means there might be life on Venus. But to know for sure we need to go there and find out. Determining the possibility of life on another planet could take some time, so it is imperative that we start visiting as soon as possible to evaluate the possibility of life there. Read More Lead the technologies of the future. Click to know more about the MIT Technology Leadership Program (TLP).