Demand for Stephen Hawking's Thesis Crashes Web Site

Downloads of the physicist’s 1966 doctoral thesis overwhelm University of Cambridge servers

Join Our Community of Science Lovers!

A lot of people want to read something they'll barely understand.

The University of Cambridge made famed cosmologist Stephen Hawking's 1966 doctoral thesis freely available to the public today (Oct. 23), and demand for the document has been so intense that it crashed the download website.

As of this afternoon, that website was still down.


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


Hawking's 134-page thesis, "Properties of Expanding Universes," was already the most-requested item in Cambridge's open-access repository, known as Apollo, university officials said in a statement. Hundreds of people had asked to download the document in just the past few months, they added.

Now people don't have to ask. And the 75-year-old is definitely on board with the change.

"Anyone, anywhere in the world should have free, unhindered access to not just my research, but to the research of every great and enquiring mind across the spectrum of human understanding," he said in .

"Each generation stands on the shoulders of those who have gone before them, just as I did as a young Ph.D. student in Cambridge, inspired by the work of Isaac Newton, James Clerk Maxwell and Albert Einstein," Hawking added. "It's wonderful to hear how many people have already shown an interest in downloading my thesis—hopefully they won’t be disappointed now that they finally have access to it!"

Copyright 2017 SPACE.com, a Purch company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Mike Wall has been writing for Space.com since 2010. His book about the search for alien life, “Out There,” was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor’s degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz.

More by Mike Wall

SPACE.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier.

More by SPACE.com

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe