Internet trolls Pluto: From Mickey Mouse's dog to alien base

After a three-billion-mile (4.8-billion-kilometer) journey that took nearly 10 years, the nuclear-powered New Horizons -- about the size of a baby grand piano whizzed by Pluto, beamed home to scientists a message that it survived its historic encounter before sending back the closest look ever of the distant dwarf planet.

After a three-billion-mile (4.8-billion-kilometer) journey that took nearly 10 years, the nuclear-powered New Horizons -- about the size of a baby grand piano whizzed by Pluto, beamed home to scientists a message that it survived its historic encounter before sending back the closest look ever of the distant dwarf planet.

Back home, space enthusiasts jumped with joy as this was the first spacecraft to fly past Pluto.

"Pluto just had its first visitor! Thanks @NASA - it's a great day for discovery and American leadership," tweeted Obama.

Once New Horizons completed the 'fly by' successfully, Internet decided to poke fun by sharing #plutoflyby memes on Twitter.

Here is a collection of the some of the best memes on the topic.