All images: NASA
We all know that Jupiter is the biggest planet in our solar system. But which planet is the biggest in our universe? It is likely a giant exoplanet, named ROXs 42 Bb. According to NASA, ROXs 42 Bb has a radius that’s estimated to be 1.12 times that of Jupiter’s.
IC 1101 is the largest-known galaxy in the universe. Its radius is a mind-boggling 1.9569 million light years. The galaxy was discovered by William Herschel on June 19, 1790. IC 1101 is 40 times larger than our Milky Way Galaxy.
Black Holes are some of the biggest objects in our universe. Their gravitational pull is so strong, that not even light can escape them. Officially, the biggest black hole in our universe is TON 618, which is 40 billion times the mass of our Sun. However, some scientists have suggested that Phoenix A might be the biggest black hole with a mass that is 100,000,000,000 times of the Sun.
Stephenson 2-18 is the largest known star in our universe. Its diameter is 2,150 times that of the Sun.