Trying https to bb.oolite.space has been giving 525 (SSL Handshake Failed) and 504 (Gateway Time-out) errors for the last few hours. Using http instead got me here on the first try. Apparently, your SSL certificate has expired.
"There are large, white swans, and there are small, black swans," he explained, "But there are no medium-sized swans, and there are no grey swans. The non-existence of grey swans mitigates against belief in Mr Darwin's theory."
Our resources are "under the umbrella" of Cloudflare, i.e. users' browsers interact not with our server, but with CF servers, thus CF certificates are used, and they cannot be expired, otherwise half of the Internet will stop )
Perhaps there was some temporary network failure.