Profile

Cover photo
Matt Sisk
Works at CERT
153 followers|67,378 views
AboutPostsPhotosYouTube

Stream

Matt Sisk

Shared publicly  - 
 
Unexpected events on a long journey...
The crew of the tugboat hauling the last unflown space shuttle external fuel tank to California reports they have rescued four passengers from a fishing boat that sunk off the coast of Mexico.
3
Jeff Schmitz's profile photoMatt Sisk's profile photo
2 comments
 
Nah, they definitely shipped the last unused shuttle tank off to California recently.
http://www.planetary.org/blogs/jason-davis/2016/20160515-et-94-san-diego.html
Add a comment...

Matt Sisk

Shared publicly  - 
 
Great overview of the RS-25 and why it's being used in the SLS, along with a detailed comparison to other engines such as SpaceX's Merlin.
The RS-25 powered the space shuttle for three decades, and will soon be used on the Space Launch System. Is it still the Ferrari of rocket engines? A deep dive on performance, reliability and the politics of rocket science.
2
Add a comment...

Matt Sisk

Shared publicly  - 
 
Putting the 4k version here for posterity...
2
Add a comment...

Matt Sisk

Shared publicly  - 
 
Great explanation of Graham's Number...head explodes.
Graham's number is so big, we need a whole new set of tools to even discuss it.
2
1
Add a comment...

Matt Sisk

Shared publicly  - 
 
Following up on yesterday's article about the distribution of the last digit of primes...
1
Add a comment...

Matt Sisk

Shared publicly  - 
 
Pretty interesting property of prime numbers, but here's something I never knew:

If Alice tosses a coin until she sees a head followed by a tail, and Bob tosses a coin until he sees two heads in a row, then on average, Alice will require four tosses while Bob will require six tosses, even though head-tail and head-head have an equal chance of appearing after two coin tosses.
1
Julie Cochrane's profile photoMatt Sisk's profile photo
2 comments
 
+Julie Cochrane​ it's safe because the methods that involve two prime factors have no requirement to be adjacent primes.
Add a comment...

Matt Sisk

Shared publicly  - 
 
I like how he slipped this gem in:

Suppose, for example, the intent is to observe a particular feature, perhaps the bright center of Occator crater, the lonely, towering mountain Ahuna Mons, the fractures in Dantu crater or artificial structures that definitively prove the existence of extraterrestrial intelligence, utterly transforming our understanding of the cosmos and shattering our naive perspectives on life in the universe.
More than eight years after leaving Earth behind for an ambitious deep space adventure, the Dawn mission has now collected all of the data originally planned. Chief Engineer and Mission Director Marc Rayman brings us an update.
2
Add a comment...
Have him in circles
153 people
David Goodman's profile photo
Francis Turner's profile photo
Mike Lenox's profile photo
Annie Pittsburgh's profile photo
Bob Roth's profile photo
nancy pegher's profile photo
Rotem Guttman's profile photo
Julia Thompson's profile photo
Bransen Daniels's profile photo

Matt Sisk

Shared publicly  - 
 
Where the quest to understand the most mysterious star in the galaxy stands today.
1
Add a comment...

Matt Sisk

Shared publicly  - 
 
Is the British government’s response to a naming contest tyrannical? Or the very definition of the democratic process?
2
Julie Cochrane's profile photoRobert Edmonds's profile photo
2 comments
 
With underscores
Add a comment...

Matt Sisk

Shared publicly  - 
 
Fantastic
1
Add a comment...

Matt Sisk

Shared publicly  - 
 
Meanwhile, in Pittsburgh...
If you watched the growing feud between Austin and San Antonio unfold this week, you might have seen this coming, but on Saturday, Austin Mayor Steve Adler made it official: We're at war. A taco war. "I come to you this morning with some grave news," he told a group of hundreds of University of Texas volunteers during the opening ceremony to the school's largest community service event of the year. "The city...
2
Charles Forsythe's profile photo
 
I'm surprised this hasn't happened sooner. 
Add a comment...

Matt Sisk

Shared publicly  - 
 
New research explains how the hottest peppers get their burn.
1
Charles Forsythe's profile photoDan Thompson's profile photo
2 comments
 
+Charles Forsythe Me too, though I was thinking more like "souls of the damned".
Add a comment...
People
Have him in circles
153 people
David Goodman's profile photo
Francis Turner's profile photo
Mike Lenox's profile photo
Annie Pittsburgh's profile photo
Bob Roth's profile photo
nancy pegher's profile photo
Rotem Guttman's profile photo
Julia Thompson's profile photo
Bransen Daniels's profile photo
Work
Employment
  • CERT
    present
Links
YouTube
Story
Tagline
Just a creature, like you.
Basic Information
Gender
Male