Join Donate

Planetary RadioJanuary 13, 2015

Dr. J and the World’s Biggest Telescope

Download MP3

Special Guests
Joe Liske
Joe Liske

Acting Programme Scientist for the European Extremely Large Telescope (E-ELT), and host of Hubblecast, European Southern Observatory (ESO)

Joe Liske, host of Hubblecast, is also the top scientist on the European Southern Observatory’s European Extremely Large Telescope (E-ELT), now under construction on a Chilean mountaintop. “Dr. J” tells us what this largest ever telescope will help us discover. Emily Lakdawalla has updates on the Akatsuki and Chang’e missions. Bill Nye shares his thoughts about the latest SpaceX launch to the International Space Station. Bruce Betts looks back at the Huygens lander on Saturn’s moon Titan for this week’s What’s Up.

European Extremely Large Telescope deploying lasers for adaptive optics

ESO/L. Calçada/N. Risinger (skysurvey.org)

European Extremely Large Telescope deploying lasers for adaptive optics
The E-ELT will make extensive use of adaptive optics to achieve images of remarkable sharpness. In this artist’s view the future 39-meter telescope is shown using lasers to create artificial stars high in the atmosphere. These are used as part of the telescope’s sophisticated adaptive optics system to remove much of the blurring effect of the Earth’s atmosphere.

Related Links:

Trivia Contest

This week's prizes are the beautiful and informative Year in Space Desk and Wall Calendars.

This week's question:

To the nearest half-hour, how long did it take the Huygens probe to descend from the top of Titan’s atmosphere to the surface?

To submit your answer:

Complete the contest entry form at http://planetary.org/radiocontest or write to us at [email protected] no later than Tuesday, January 20, 2015 at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

Besides Galileo (the man, not the spacecraft) who was the first person to discover a moon circling another planet? (Not Earth’s moon, but you might earn extra points if you tell us who discovered that moon, too. Also, a Nobel prize.)

Answer:

The answer will be revealed next week.

Question from the week before:

How many rockets carried humans into orbit in 2014?

Answer:

Four rockets carried humans into orbit in 2014.

Listen more: commercial spaceflight, mission status, Akatsuki (Planet-C), Planetary Radio, Chang'E program, International Space Station, optical telescopes, Bill Nye

You are here:
Comments & Sharing
astronaut on Phobos
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

Mat Kaplan
Support Radio

Keep our weekly radio program broadcasting online and on the air around the world.

Donate