On March 14, 2018, visionary physicist Stephen Hawking passed away at the age of 76. You know his name, and may have even watched a biopic or two about him. But if you've ever wondered what specifically Hawking's big contributions to science were, and you have two and a half minutes to spare, the animation below is for you. It's brief, easy to understand, and gets to the point with nice narration by Alok Jha. So here, in a very brief and simple way, are some of Stephen Hawking's big ideas:

If you have more than a few minutes, we heartily recommend Hawking's classic book A Brief History of Time. It's easy to read, and it's truly brief.

[h/t: Open Culture]