Warm greetings for having different career thoughts!!! But honestly speaking the best way to achieve your degree as a space scientist is oriented with B.Tech course in either Aerospace Engineering or Avionics Engineering followed by M.Tech and then higher PhD studies.

If you can use up your innovative thought capabilities then there are several job profiles like

Astronauts

Space Scientist

Space Tourism

Space Research/ Academics

Space Psychology

Aerospace Engineers

Computer Engineers

Materials Engineers

Mechanical Engineers

Robotics Engineers

Hope it helps,

Good luck!!!