Planet 9 From Outer Space!

Mike Brown and Konstantin Batygin fully expect a new and undemotable ninth planet will be found in the outer reaches of the solar system. The Caltech researchers talk about their findings and much more. Emily Lakdawalla has made a wealth of Chinese lunar lander images much more accessible. Have gravity waves been discovered? Bill Nye hopes so, as he also remembers Apollo 14 moonwalker Edgar Mitchell.

Related Links:

• Caltech Article and Video About Planet 9
• XKCD: Possible Undiscovered Planets
• Mike Brown’s Planets
• Seventh Season—Konstantin Batygin’s Rock Band
• Fun With a New Data Set: Chang'e 3 Lander and Yutu Rover Camera Data
• Planetary Radio Extra: LightSail Update

This week's prizes are a lovely Planetary Radio t-shirt, a 200-point iTelescope.net astronomy account AND a set of Year In Space wall and desk calendars.

This week's question:

What was famous astronomer Herschel’s first and middle names?

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, February 16th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

In Earth days, how long is a Pluto day (as well as a Charon day)?

Answer:

The answer will be revealed next week.

Question from the week before:

Where in the solar system is Anthony Patera?

Answer:

Anthony Patera is both a shallow depression on Venus that honors Susan B. Anthony and a distinguished professor at MIT.