Stephen Hawking Gets Honored by "Big Bang Theory" Cast in Heartfelt Way

The caption on Kaley Cuoco's post will just break you.

Stars and scientists alike are paying tribute to scientist Stephen Hawking after news broke that on March 14th, at the age of 76.

Hawking was famous for his theories related to black holes and quantum gravity, authoring the book "" and overcoming the odds for survival after being diagnosed with amyotrophic lateral sclerosis (ALS) at 21.

He also made several TV cameos, including The Big Bang Theory. Hawking made an appearance on the show in 2012, and has been mentioned countless times, as he was one of Sheldon's heroes.

Once the cast heard the news of Hawking's death, they paid tribute to the beloved physicist with a sweet behind-the-scenes photo.

In loving memory of Stephen Hawking. It was an honor to have him on The . Thank you for inspiring us and the world.

— The Big Bang Theory (@bigbangtheory)

Kaley Cuoco shared the same photo on Instagram, along with a caption that read: "It was truly such an honor getting to work with the incredible Stephen Hawking. He made us laugh and we made him laugh. His life and career workings have been many a subject matter on and we are all better for it."

A post shared by (@kaleycuoco) on

Other celebrities have also paid tribute to Hawking. Eddie Redmayne, who played Hawking in 2014's , said to , "We have lost a truly beautiful mind, an astonishing scientist and the funniest man I have ever had the pleasure to meet. My love and thoughts are with his extraordinary family."

Fellow scientist Neil deGrasse Tyson also shared his appreciation for Hawking.

His passing has left an intellectual vacuum in his wake. But it's not empty. Think of it as a kind of vacuum energy permeating the fabric of spacetime that defies measure. Stephen Hawking, RIP 1942-2018.

— Neil deGrasse Tyson (@neiltyson)

And from us, we say, RIP Stephen Hawking — you will be missed.

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