At the outset, there are numerous reasons why space expeditions are important. For example, astronauts have been researching for water on other planets to find out if there is any possibility of other livings on other planets. Furthermore, they also research to find out the planet that has similar
condition like planet earth, so that in the future, they can transport human population on other planets in case of over population.
However, there are millions of people, who strongly oppose this notion. They believe that the amount of money being spending on other planets should be used for the welfare of this planet. There are millions of people, who are living below the poverty line. Millions of people do not have basic necessities such as clean water and food. Therefore, instead of spending money on such kind of projects and research, it would be great if they spend these resources here.
To sum up, both sides have true and legitimate views, but my personal opinion is in the favour of latter notion. This world has suffered a lot and I believe, it is the time to payback to this, rather than spending on other planets, where chances of living things are remote.