Joe Palca

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Copyright 2019 NPR. To see more, visit https://www.npr.org.

ARI SHAPIRO, HOST:

When Neil Armstrong set foot on the moon 50 years ago, it was an inspiring moment for people around the world.

But another kind of explorer is responsible for much of the modern enthusiasm for space exploration.

"Since the days of Apollo, the greatest adventures in space have been these robots that have gone all over the solar system," says Emily Lakdawalla, a self-described planetary evangelist at the Planetary Society.

Copyright 2019 NPR. To see more, visit https://www.npr.org.

MICHEL MARTIN, HOST:

Copyright 2019 NPR. To see more, visit https://www.npr.org.

MARY LOUISE KELLY, HOST:

The path of a total solar eclipse passed over a major observatory in Chile this afternoon. NPR science correspondent Joe Palca was there. He saw the eclipse from the Cerro Tololo Inter-American Observatory from where he joins us now live.

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