Advertise on podcast: The Cosmic Brief

On April 13, 2029, asteroid Apophis will make an extremely close pass by Earth — closer than some satellites. NASA says Apophis will not hit Earth, but this rare flyby gives scientists a once-in-a-lifetime chance to study how Earth’s gravity can affect a massive asteroid. Could it change Apophis’ spin, shift its surface, or help us prepare for a future asteroid threat? In this episode of The Cosmic Brief, we break down why Apophis once worried scientists, what will happen during the 2029 flyby, and why this close encounter matters for the future of planetary defense. The Cosmic Brief explores space mysteries, cosmic events, strange worlds, and the biggest questions in the universe — one brief episode at a time.

Space is far stranger than most people realize. In this episode of The Cosmic Brief, we break down 10 incredible facts about planets—from sideways worlds and endless storms to rogue planets drifting through the darkness. These are the discoveries that don’t just surprise you… they change how you see the universe. Short, cinematic, and packed with real science—this is your quick trip around the cosmos.

During the historic Apollo 11 mission, a small failure nearly left astronauts stranded on the Moon. In this episode of The Cosmic Brief, we explore the tense moments inside the Eagle, the isolation of being hundreds of thousands of miles from Earth, and the unexpected solution that helped them make it home. A story of precision, pressure, and how one overlooked detail almost changed history.

For one full day, the Moon disappears. No warning. No explanation. At first, the sky just looks darker… but beneath the surface, the effects begin to build. Tides fall out of rhythm. Ocean currents shift. Subtle changes ripple across the planet as Earth briefly operates without one of its most important forces. From the beaches of Florida to the waters of New York Harbor, we explore what would actually happen if the Moon vanished for 24 hours—and why even a short absence would matter more than you think. This is The Cosmic Brief.

High above Earth, a strange flickering object was spotted moving through the night sky at incredible speed. Amateur astronomers tracked it. Theories spread. Some believed it was space debris. Others weren’t so sure. In this episode, we follow the story of one of the most unusual objects recently seen in low Earth orbit—and how something so small became such a compelling mystery. For a brief moment, it was something anyone could see…if they knew where to look. And that… is a Cosmic Mystery.

During the Apollo 10 mission, astronauts heard something strange while orbiting the far side of the Moon. A mysterious whistling sound—like “space music”—echoed through their headsets. With no contact with Earth at the time, the crew had no explanation. Was it interference… or something we still don’t understand?

In 1977, a mysterious signal from deep space was detected—and it’s still unexplained today. Known as the Wow Signal, this 72-second transmission was picked up by a radio telescope and never seen again. In this episode of The Cosmic Brief, we break down what happened, why this signal was so unusual, and the theories behind what it could have been. Was it a natural phenomenon… interference… or something else entirely? More than four decades later, the Wow Signal remains one of the greatest mysteries in space.

A major meteor shower is coming this May—and it’s one you don’t want to miss. In this episode of The Cosmic Brief, we break down the Eta Aquariids meteor shower, including when it peaks, where to look, and how to watch it with your own eyes. These meteors come from debris left behind by Halley's Comet, meaning every shooting star you see is a tiny piece of a comet burning up in Earth’s atmosphere. We cover what makes this meteor shower unique, what you can expect to see, and how to give yourself the best chance of catching it. If you’re planning to watch the night sky this May, this is everything you need to know.

NASA’s Artemis II mission marks a major step toward returning humans to deep space. In this episode, we break down what it is, why it matters, and what comes next for the future of space travel.