The total amount of energy in a closed system such as our Universe cannot be created nor destroyed and therefore remains constant

A Very Very Sad Day. #RIPCarrieFisher. Forever You Will Be In Our Hearts. May The Force Be With You. Always. We Love You.

youtu.be/UtkuZbcZORE #RIPCarrieFisher Listening to Princess Leias Theme

I hope you all slip slowly into #darkness tonight. #DarkSide4Life #Darkside

My boys got a deadly first touch! 😻❤️🎾 #MaineCoon #MaineCoonCats #CatsOfTwitter

The International Space Station orbits Earth in 1 hour and 32 min at a speed of 27 thousand Km per hour and an altitude of 400 Km

10,000-kilometer-long wave in the cloudy atmosphere of #Venus planet painting by Kerstin Jacobs 7seal Apokalypse little-starlight-galaxy.eu

Active #galaxy BL Lac has a variation period of 680 days in optical&GammaRay: Due to a binary #BlackHole rotation?: bit.ly/2jZZccU

#MyFirstWordsAsPresident You are now members of the Empire

STILL OF THE DAY: #ObiWanKenobi prepares to duel the sinister #GeneralGrievous in this scene from #StarWars #RevengeOfTheSith 🦗

*_* nice very nice *_*

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Hey! Check out #fispio. I've got a new skin! play.google.com/store/apps/det…