How to Defend Your Planet

Planetary scientist Vishnu Reddy studies space objects ranging from satellite debris to planet-killing asteroids. He shares the status of our effort to avoid the fate of the dinosaurs in a conversation with host Mat Kaplan. Did you know fruit flies were first in space? That’s just one of the random space facts you’ll absorb in this week’s What’s Up segment with Bruce. Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/0925-2019-vishnu-reddy-planetary-defense.html

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Episoder(1315)

X-raying the universe with Martin Weisskopf

X-raying the universe with Martin Weisskopf

He helped invent X-ray astronomy more than 50 years ago. Martin Weisskopf still leads the field as project scientist for the spectacular Chandra X-ray Observatory and principal investigator for the br...

30 Mar 202255min

Legendary Space Physics Pioneer Margaret Kivelson

Legendary Space Physics Pioneer Margaret Kivelson

At 93, Margaret Kivelson is still at the center of space science and policy. In this charming conversation she shares anecdotes about her early life, how she entered the new field of space physics and...

23 Mar 202252min

Planetary Radio Special Edition: The Voyager Golden Record by Twenty Thousand Hertz

Planetary Radio Special Edition: The Voyager Golden Record by Twenty Thousand Hertz

We are honored to offer you this outstanding episode of one of our favorite podcasts. Twenty Thousand Hertz reveals the stories behind the world's most recognizable and interesting sounds. Here they p...

18 Mar 202233min

Meet the first STEP Grant awardees

Meet the first STEP Grant awardees

Citizen scientists will soon have another opportunity to become part of the search for extraterrestrial intelligence, and an innovative project will use a subtle effect of sunlight to learn about near...

16 Mar 20221h 1min

Water, water everywhere with Bethany Ehlmann

Water, water everywhere with Bethany Ehlmann

Planetary scientist Bethany Ehlmann has co-authored a paper presenting evidence that liquid surface water flowed on Mars as much as a billion years more recently than previously thought. That’s an ext...

9 Mar 202248min

Space Policy Edition: Why are outer planets missions so expensive?

Space Policy Edition: Why are outer planets missions so expensive?

It's the 50th anniversary of Pioneer 10, the first spacecraft to the outer planets. Pioneers 10 and 11 were scrappy, low-cost endeavors that blazed the path for future exploration. But the future has ...

4 Mar 20221h 27min

5,000 worlds and counting: the success of TESS

5,000 worlds and counting: the success of TESS

Michelle Kunimoto was one of Forbes magazine’s 30 Under 30 in science. Now she leads the most successful search for exoplanets that relies on data delivered by the Transiting Exoplanet Survey Satellit...

2 Mar 202248min

Astrobiologist David Grinspoon on life, the universe and everything

Astrobiologist David Grinspoon on life, the universe and everything

Astrobiologist, planetary scientist, author and science communicator David Grinspoon has just been named a lifetime fellow of the American Association for the Advancement of Science. He returns to Pla...

23 Feb 20221h 4min

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