Science

The largest galaxy that has been spotted so far is IC 1101.

It has been used as a gemstone since antiquity.

Several of Titan’s mountains are named for mountains from J. R. R. Tolkien literature (i.e. Moria Montes), and colles (collection of hills) are named after Tolkien’s characters (i.e. Arwen).

Ganymede has a very thin atmosphere that is almost 100% of oxygen.

The highest point on Earth is Mount Everest.

Magma is formed in deep parts of the Earth's crust.

The fungus Ophiocordyceps unilateralis can take over ants.

Probably in 365 BC, the Chinese astronomer Gan De managed to observe Ganymede with the naked eye.

In the future, the European Space Agency plans to explore the moon during the Jupiter Icy Moon Explorer (JUICE) mission.

Phobos was photographed by the following probes: Mariner 7, Mariner 9, Viking 1, Phobos 2, Mars Global Surveyor, Mars Express, and Mars Reconnaissance Orbiter.