19.‘Unicorn’ is the name of which space body, that was recently discovered at 1,500 light-years away from the Earth?

[A] Exo-planet
[B] Black hole
[C] Asteroid
[D] Satellite

3 Scientists who study the sun are called astronomers. Our sun gives us light, heat, and energy. Without the sun, life on Earth would not exist. The sun is a normal star, but it is much closer to us than any other star. By studying the sun, we can learn more about - 5.3(C)

A other planets

B other asteroids

C otherstars

D other satellites