Science

StarDate

by Billy Henry

Today: #197 in Science on our combined chart.

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Science

#197

#181 Pulse 4

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Date	Combined Rank	Apple Podcasts
Oct 9	#197	#181

About the show

StarDate, the longest-running national radio science feature in the U.S., tells listeners what to look for in the night sky.

Latest episodes

Quiet Monster

October 8, 2026 · 2 min

A quiet monster lurks in the heart of M31, the Andromeda Galaxy. Known as M31-star, it’s a black hole a hundred million times the mass of the Sun, and 25 times heavier than the black hole at the heart of the Milky Way. Every large galaxy…
Andromeda Galaxy

October 7, 2026 · 2 min

Two-and-a-half million years ago, Earth was going through some big changes. It was the start of the Pleistocene epoch – a period of major ice ages. And the ancestors of modern humans were just appearing. That timescale puts a little…
Moon and Regulus

October 6, 2026 · 2 min

The Moon has had a busy social calendar this week. It’s had meet-and-greets with the twins of Gemini and the planets Mars and Jupiter. And it has one more engagement tomorrow. Regulus, the heart of the lion, will stand above the Moon at…
Moon and Jupiter

October 5, 2026 · 2 min

For skywatchers across the eastern United States, the planet Jupiter will vanish early tomorrow – hidden behind the crescent Moon. The rest of the country will see an impressively close encounter between the two bodies. The vanishing act…
Moon and Mars

October 4, 2026 · 2 min

To borrow from “Alice in Wonderland,” the case for life on Mars keeps getting curiouser and curiouser. Two rovers have discovered organic compounds there – the chemical building blocks of life – in locations that are thousands of miles…
Moon and Companions

October 3, 2026 · 2 min

The Moon will run a gauntlet of bright stars and planets the next few mornings, from the twins of Gemini to the heart of the lion. The twins are up first. Pollux and Castor will perch to the upper left of the Moon at dawn tomorrow. Pollux…
Saturn Opposition III

October 2, 2026 · 2 min

Saturn is a “superior” planet. Among other things, it’s the second-largest and second-heaviest planet in the solar system. Technically, though, what makes it “superior” is its location. It’s the sixth planet from the Sun, so its orbit is…
Saturn Opposition II

October 1, 2026 · 2 min

This isn’t a sound effect from a sci-fi movie. Instead, it’s the “voice” of the auroras on the planet Saturn – radio waves that have been shifted to wavelengths we can hear. They were recorded by the Cassini spacecraft as it closed in on…