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NewsNew record set for cryptographic challenge Pin
Kent Sharkey15-Mar-20 6:15
staffKent Sharkey15-Mar-20 6:15 
GeneralRe: New record set for cryptographic challenge Pin
Mark_Wallace15-Mar-20 9:48
MemberMark_Wallace15-Mar-20 9:48 
GeneralRe: New record set for cryptographic challenge Pin
David O'Neil15-Mar-20 12:11
professionalDavid O'Neil15-Mar-20 12:11 
NewsAncient shell shows days were half-hour shorter 70 million years ago Pin
Kent Sharkey12-Mar-20 12:45
staffKent Sharkey12-Mar-20 12:45 
GeneralRe: Ancient shell shows days were half-hour shorter 70 million years ago Pin
Nelek12-Mar-20 14:33
protectorNelek12-Mar-20 14:33 
GeneralRe: Ancient shell shows days were half-hour shorter 70 million years ago Pin
Mark_Wallace12-Mar-20 22:45
MemberMark_Wallace12-Mar-20 22:45 
GeneralRe: Ancient shell shows days were half-hour shorter 70 million years ago Pin
Bernhard Hiller12-Mar-20 23:54
MemberBernhard Hiller12-Mar-20 23:54 
GeneralRe: Ancient shell shows days were half-hour shorter 70 million years ago Pin
Dan Neely13-Mar-20 3:46
MemberDan Neely13-Mar-20 3:46 
Someone there needs to check his math.

Quote:
The moon is pulling away from Earth at 3.82 centimeters (1.5 inches) per year.

...

But scientists conclude the Moon could not have been receding at this rate throughout its history, because projecting its progress linearly back in time would put the Moon inside the Earth only 1.4 billion years ago. Scientists know from other evidence that the Moon has been with us much longer, most likely coalescing in the wake of a massive collision early in Earth's history, over 4.5 billion years ago.
(emphasis mine).

The moon currently averages 238,900 miles away. That's 1.3 billion feet or 15 billion inches. At a constant 1.5"/year it'd take 10 billion years to rewind the moon back to the Earth. D'Oh! | :doh:

Which is the expected result since the tidal forces pushing the moon away get stronger the closer the Earth and Moon are to each other. You can't just use a physics 101 model to wind things back though; the shape of the Earth's oceans, and the resulting fact that the tidal bulge in water doesn't align with the one in rock causes the rate to vary as the continents move. Which makes measurements like this which set values at known times in the past so useful.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, weighing all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius

Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies.
-- Sarah Hoyt

NewsWhat should be on a QA tester’s résumé? Pin
Kent Sharkey12-Mar-20 12:45
staffKent Sharkey12-Mar-20 12:45 
GeneralRe: What should be on a QA tester’s résumé? Pin
Nelek12-Mar-20 14:31
protectorNelek12-Mar-20 14:31 
GeneralRe: What should be on a QA tester’s résumé? Pin
Mark_Wallace12-Mar-20 22:17
MemberMark_Wallace12-Mar-20 22:17 
GeneralRe: What should be on a QA tester’s résumé? Pin
Sara Moore14-Mar-20 6:34
MemberSara Moore14-Mar-20 6:34 
GeneralRe: What should be on a QA tester’s résumé? Pin
BillWoodruff15-Mar-20 22:09
mveBillWoodruff15-Mar-20 22:09 
NewsYou can download and 3D print NASA's multi-tool, and other space-related stuff, for free Pin
Kent Sharkey12-Mar-20 12:30
staffKent Sharkey12-Mar-20 12:30 
GeneralRe: You can download and 3D print NASA's multi-tool, and other space-related stuff, for free Pin
Nelek12-Mar-20 14:35
protectorNelek12-Mar-20 14:35 
GeneralRe: You can download and 3D print NASA's multi-tool, and other space-related stuff, for free Pin
Mark_Wallace12-Mar-20 22:34
MemberMark_Wallace12-Mar-20 22:34 
NewsUnsecured database exposes 76,000 fingerprints Pin
Kent Sharkey12-Mar-20 11:30
staffKent Sharkey12-Mar-20 11:30 
GeneralRe: Unsecured database exposes 76,000 fingerprints Pin
Mark_Wallace12-Mar-20 12:13
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GeneralRe: Unsecured database exposes 76,000 fingerprints Pin
j snooze12-Mar-20 12:20
Memberj snooze12-Mar-20 12:20 
GeneralRe: Unsecured database exposes 76,000 fingerprints Pin
Nelek12-Mar-20 14:36
protectorNelek12-Mar-20 14:36 
NewsMicrosoft patches SMBv3 wormable bug that leaked earlier this week Pin
Kent Sharkey12-Mar-20 10:45
staffKent Sharkey12-Mar-20 10:45 
GeneralRe: Microsoft patches SMBv3 wormable bug that leaked earlier this week Pin
Nelek12-Mar-20 14:37
protectorNelek12-Mar-20 14:37 
GeneralRe: Microsoft patches SMBv3 wormable bug that leaked earlier this week Pin
Kent Sharkey13-Mar-20 8:52
staffKent Sharkey13-Mar-20 8:52 
GeneralRe: Microsoft patches SMBv3 wormable bug that leaked earlier this week Pin
Nelek13-Mar-20 16:13
protectorNelek13-Mar-20 16:13 
NewsNearly all IoT traffic is unencrypted Pin
Kent Sharkey12-Mar-20 10:45
staffKent Sharkey12-Mar-20 10:45 

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