Absolutely beautiful video created using still images taken by the Cassini spacecraft during its flyby of Jupiter and while at Saturn. Shown is Io and Europa over Jupiter's Great Red Spot and then Titan as it passes over Saturn and it's edge-on rings. NASA/JPL/Kevin M. Gill pic.twitter.com/BWaVP5h6Ob

— Domenico (@AvatarDomy) January 1, 2019

We got images!!

This is what 2014 MU69 #UltimaThule looks like: Anybody wanna peanut?

… but it still might be two separate objects in orbit. We’ll know better tomorrow. pic.twitter.com/EVYbmcXNoO

— Phil (Newsletter link in bio) Plait (@BadAstronomer) January 1, 2019

Just what is #UltimaThule?
A) A little-known building block of our solar system
B) A Kuiper belt object
C) The Jan. 1 flyby target for @NASANewHorizons
If you picked "all of the above," well done! 🌟 Send us #askNASA questions now on Facebook Live: https://t.co/KKGXt7aMeg pic.twitter.com/rWia1yH6Fm

— NASA (@NASA) December 19, 2018

Mars' Olympus Mons, the tallest known volcano in the solar system, has such a gradual slope that someone standing at the base couldn't see the summit because it's beyond the horizon. pic.twitter.com/cKjWpKGhIR

— Fermat's Library (@fermatslibrary) December 13, 2018