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 enabled astronomers to discover the brightest galaxy in the universe?

• The Hubble Space Telescope

• The Wide Field Infrared Survey Explorer (WISE)

• The James Webb Space Telescope

• The Chandra X-ray Observatory

Why is the energy from the brightest galaxy emitted as infrared light?

• The galaxy is too far away to see in visible light

• The energy is absorbed by dust and re-emitted as infrared

• The galaxy is moving away from us at high speed

• The galaxy's stars are too dim

What is one theory for the large X-ray flares from Sagittarius A*?

• A nearby star is colliding with the black hole

• Nearby asteroids are being pulled in and torn apart

• The black hole is moving closer to Earth

• The black hole is shrinking

What is the purpose of NASA's Space Launch System (SLS)?

• To monitor Earth's climate

• To explore the outer planets

• To send astronauts to Mars

• To replace the International Space Station

How much thrust does the new SLS rocket booster produce?

• £1 million

• £2 million

• £3.6 million

• £5 million