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Brian Grefenstette
Works at California Institute of Technology
Attended Stanford University
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Brian Grefenstette

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Okay, so this has been going around the arXiv for a few weeks now, but there’s a pretty good case for showing the tenacity of scientists in proving themselves wrong when something just doesn’t feel quite right…
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Brian Grefenstette

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Moon-Venus-Mars Skyline
Image Credit & Copyright: Jay Ouellet
http://apod.nasa.gov/apod/ap150228.html

Taken on February 20, five different exposures made in rapid succession were used to created this tantalizing telephoto image. In combination, they reveal a wide range of brightness visible to the eye on that frigid evening, from the urban glow of the Quebec City skyline to the triple conjunction of Moon, Venus and Mars. Shortly after sunset the young Moon shows off its bright crescent next to brilliant Venus. Fainter Mars is near the top of the frame. Though details in the Moon's sunlit crescent are washed out, features on the dark, shadowed part of the lunar disk are remarkably clear. Still lacking city lights the lunar night is illuminated solely by earthshine, light reflected from the sunlit side of planet Earth.
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So yesterday I posted about exactly how big a 12 billion solar mass black hole appears to be. But I didn’t get into the followup question of, “So why is this new black hole exciting?” Here’s why this is cool, and surprising.
So yesterday I posted about exactly how big a 12 billion solar mass black hole appears to be. But I didn’t get into the followup question of, “So why is this new black hole exciting?” Here’s why th...
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Gravitational lensing creates cosmic emoticon

I've seen many articles go up about this amazing image taken by the +Hubble Space Telescope, from +TIME to +Washington Post to this article shared out by my friend +Bethany Brookshire... which I absolutely love.

It's focused on explaining the science of this awesome image so students can better understand what's going on. To learn more about gravitational lensing and the "Einstein Ring" seen here, go read the article below. It's short and very easy to understand!

#ScienceEveryday   #Space   #Astronomy   #Hubble   #DarkMatter   #GravitationalLensing   #Hubble25  
Ancients used to ‘see’ the outline of animals and other well-known things as constellations in the night sky. Now astronomers have done much the same thing. But they’ve spotted a more distant — if totally modern — shape: a smiley face!
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Brian Grefenstette

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…it’s a space station. Well, not really. But even this thing at a measly 300(ish) meters across has enough gravity to trap a moon (and keep it bound, even when it’s doing a flyby of MUCH bigger fish, like us). Full story with an animated gif of the moon…
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Okay, so I know that this is old news for mos people, but commuting sucks. If the world were a perfect place, then we’d all be able to ditch the car, live in close proximity to all of our friends and relatives, and have an amazing grocery store within an…
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+Brian Grefenstette I feel it man. I pushed a furniture delivery truck around Denver/Metro for 30 years.
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Have him in circles
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Okay, this is more of a placeholder and link sharing, but I use Dan Rodney’s list of Mac OSX keyboard shortcuts all of the time. Go check it out here: http://www.danrodney.com/mac/
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Brian Grefenstette

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83 years young. Thanks for the inspiration over the years.
 
Live long and prosper.  RIP Leonard Nimoy.  83 years old.

via giphy.com #startrek   #spock   #nimoy  
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Question from a friend: Multiple News sources (Time Magazine, Wired, now Salon) are all claiming that this new “Monster” Black Hole which is 12+ billion light years away (thank god) is 12 Billion Times the size of our sun… But, every time I read the…
Question from a friend: Multiple News sources (Time Magazine, Wired, now Salon) are all claiming that this new "Monster" Black Hole which is 12+ billion light years away (thank god) is 12 Billion T...
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Here’s a really awesome poster that someone is putting together on Etsy of all modern rocketry (1958 to now). It’s pretty amazing to see where the really modern rockets end up on here. This doesn’t include some of the aircraft-based launch vehicles (like…
Here’s a really awesome poster that someone is putting together on Etsy of all modern rocketry (1958 to now). It’s pretty amazing to see where the really modern rockets end up on here. Th...
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About a decade past tense.
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Let’s be honest, you needed something to splash up on that fancy external monitor. How’s about a live view fo the Earth from the ISS? Granted, half of the orbit it’s dark (because…nighttime). But every half hour or so it’s a very pretty thing to watch.
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I’ve been in the process of attempting to reduce the electronic clutter in my life. I talked a little bit about this before, and I’ve certainly haven’t missed the deluge of posts in my RSS feed. I decided to take the next step and try to see if I could…
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Have him in circles
12,777 people
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Laura Robinson's profile photo
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Education
  • Stanford University
    Physics, 2000 - 2004
  • University of California, Santa Cruz
    Physics, 2004 - 2008
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Scientist
Employment
  • California Institute of Technology
    Staff Scientist, 2012 - present
    I'm a principle mission scientist on a NASA Small Explorer mission, the Nuclear Spectroscopic Telescope ARray (NuSTAR), the world's first focusing hard X-ray telescope. I "do science" (I mostly study supernova remnants like Cassiopeia A) now that NuSTAR is up in space, but I also help to develop and maintain the software down here on the ground that turns the bits and bytes coming down from NuSTAR into pictures and spectra.
  • California Institute of Technology
    Postdoc, 2008 - 2012
  • University of California, Santa Cruz
    Research Assistant, 2004 - 2008
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Simple Google+ Bookmarklet by AJ Batac
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