Skip to main content

Asteroids go home!

Here’s a way photonics could create a better world: by preventing our earth from being pulverized by an asteroid.

The terrifying arrival of a meteorite in Chelyabinsk, Russia earlier this year raised awareness (again) of the potential for a catastrophic, much bigger object to threaten earth. This one was “only” estimated at 17-20 meters in size, weighing about 10,000 tons. Nearly 1500 people sought medical attention for injuries – flying glass was the main culprit. Also, 7000 buildings were damaged. The entry into the atmosphere created a shock wave that circled the earth twice.

So it’s good news that people are applying their creativity to the problem of even bigger objects that might threaten earth – the ones we can see coming. How to destroy them before they destroy us, or simply redirect them into a new path away from our planet? It seems like a job for lasers, doesn’t it?

A NASA press release described a “mission formulation review” this week to examine concepts for each phase of the asteroid mission. In addition NASA has received more than 400 responses to a request for information in which industry, universities and the public offered ideas for NASA’s asteroid initiative. You can bet there are plenty of lasers involved. Now we can look forward to crossing one natural catastrophe off our threat list, once our photonics-enabled protection system is in place.

Comments

Popular posts from this blog

#FacesofPhotonics: Rising Researcher Alina Zare

SPIE's #FacesofPhotonics is sharing the story of Alina Zare, Associate Professor at the The Machine Learning and Sensing Lab at the University of Florida. Dr. Zare was recognized as a 2018 Rising Researcher for her work in Electronic Imaging & Signal Processing, at the SPIE Defense + Commercial Sensing conference.

This program recognizes early career professionals who conduct outstanding research in the defense, commercial, and scientific sensing, imaging, optics, or related fields. If you want to learn more about the program, the details are here.

Enjoy the interview with Alina!

1. Tell us about when you first became interested in optics and photonics. In my senior year of  undergraduate studies in computer science, I was taking an Image Processing elective.  I really enjoyed the course, and the professor for the class, Dr. Gerhard Ritter, encouraged me to do some undergraduate research.  
So I joined Dr. Paul Gader's research lab as a undergraduate researcher where I he…

#FacesofPhotonics: Photovoltaics PhD Student Arfa Karani

Meet this week's SPIE Faces of Photonics feature, Arfa Karani. Arfa is a physics PhD student at the University of Cambridge, studying the physics of solar cells. She is originally from India, but has lived outside her home country for many years while pursuing her education. 

Arfa was also President of the SPIE Student Chapter at the University of Cambridge in 2017-18, and continues to remain involved with the chapter when she's not hard at work in the university's Cavendish Lab.


Enjoy her interview!




1. How did you become interested in the optics and photonics field? Was there a person who inspired you?

My physics teacher at school inspired me. I got interested in studying optics because my curiosity was satisfied by this teacher, who was extremely enthusiastic about what they did. When you ask too many questions as a child, people try to divert your attention once they are tired of answering. Not this teacher.

I know it’s a bit cliché, but I was amazed by how one could cre…

#FacesofPhotonics: Optimax Director of Technology and Strategy, Jessica DeGroote Nelson

SPIE Senior Member Jessica DeGroote Nelson works as the director of technology and strategy at Optimax Systems in Ontario, New York. She also teaches as an adjunct assistant professor at The Institute of Optics at the University of Rochester (UR), and is a Conference Chair for SPIE Optifab 2019. 
This year at SPIE Optics + Photonics in San Diego, Nelson will be teaching Optical Materials, Fabrication, and Testing for the Optical Engineer. This course is geared toward optical engineers who are hoping to learn the basics about how optics are made, and ways in which to help reduce the cost of the optics they are designing. 
"Optical tolerancing and the cost to fabricate an optic can be a point of tension or confusion between optical designers and optical fabricators," Nelson says. "I teach this course to help give optical designers who are new to the field a few tools in their toolbelt as they navigate tolerancing and purchasing some of their first designs. One of the thi…