Space Superlatives of 2015!

The video reflects on 2015's scientific achievements, highlighting the discovery of the brightest galaxy, the behavior of Sagittarius A*, and NASA's rocket developments. The brightest galaxy, discovered by WISE, emits energy as infrared light due to a supermassive black hole. Sagittarius A* has shown unusual X-ray flares, possibly due to asteroids or a gas cloud. NASA's new rocket booster aims to send missions to Mars, marking a significant advancement in space exploration.

What are Extremely Luminous Infrared Galaxies (Elergs) and why are they considered exciting?

Describe the capabilities of NASA's new Space Launch System (SLS) and its intended missions.