Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Multimedia IconMultimedia

Michel Mayor, Discoverer of the First Extrasolar World

51 Pegasi and its planet

Air Date: 04/05/2016
Run Time: 39:41

Listen to the full show:

Or Download mp3


Topics: commercial spaceflight, asteroids, Planetary Radio, Dawn, extrasolar planets, Mars, asteroid 1 Ceres, conference report

Support Planetary Radio

Michel Mayor and his team rocked the astronomy world with their 1995 announcement, but this modest man says it was a discovery whose time had come. Emily Lakdawalla returns to mysterious dwarf planet Ceres. Seen the latest Blue Origin launch and landing? Bill Nye has. Which acronym for Laika the space dog’s name will be best in show?

51 Pegasi b

ESO / M. Kornmesser / Nick Risinger (

51 Pegasi b
Artist’s impression of 51 Pegasi b, the first exoplanet (extrasolar planet discovered.

Related Links:

Trivia Contest

This week's grand prizes are a lovely Planetary Radio t-shirt, a 200-point astronomy account, and a Planetary Society rubber asteroid!

This week's question:

Who was the first person to vomit in space?

To submit your answer:

Complete the contest entry form at or write to us at no later than Tuesday, April 12th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

What was the first spacecraft to orbit the moon?


The answer will be revealed next week.

Question from the week before:

We want to honor Laika the dog by turning her name into a space acronym. What should LAIKA stand for? It could be a spacecraft, an instrument, a type of planetary name it. Winners will be picked based on evaluation of your entry’s creativity, humor or both.


The winning LAIKA acronym: Lifetime Achievement for International K9 Astronauts
(Thanks to all who submitted terrific entries!)


No trivia contest spoilers please!

Leave a Comment:

You must be logged in to submit a comment. Log in now.
Facebook Twitter Email RSS AddThis

Planetary Radio Search

Planetary Defense

An asteroid or comet headed for Earth is the only large-scale natural disaster we can prevent. Working together to fund our Shoemaker NEO Grants for astronomers, we can help save the world.


Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join The Planetary Society

Let’s explore the cosmos together!

Become a Member

Connect With Us

Facebook, Twitter, YouTube and more…
Continue the conversation with our online community!