Is there a Black Hole in Our Backyard?

Is there a Black Hole in Our Backyard?

What if the mysterious "Planet Nine" isn't a planet at all?

In this episode, we journey to the distant frontier of our Solar System to explore one of astronomy's strangest modern hypotheses: the possibility that the unseen object influencing the orbits of distant icy worlds could actually be a primordial black hole, an ancient relic formed in the first moments after the Big Bang.

Along the way, we'll revisit the discovery of Neptune, learn how astronomers detect objects they can't even see, and discover why gravity often reveals secrets long before telescopes do. We'll also look at the real observatories and sky surveys that may one day solve the mystery once and for all.

Then we'll head outside for your complete night sky guide for July 5-18, 2026, featuring the upcoming New Moon, Saturn in the morning sky, a beautiful crescent Moon meeting Venus, prime Milky Way observing, deep-sky targets including M13 and the Ring Nebula, and the first hints of summer meteor activity.

Connect with us on Bluesky @startrails.bsky.social

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Avsnitt(127)

The Moon That Sends Us Its Ocean

The Moon That Sends Us Its Ocean

Saturn has a moon with a hidden ocean, and that ocean is spraying samples of itself into space.Enceladus is only about 310 miles wide, but beneath its brilliant shell of ice lies a global saltwater oc...

11 Okt 34min

A Black Hole Is Pointing at Us

A Black Hole Is Pointing at Us

A black hole in our galaxy appears to be aiming a relativistic jet almost directly toward Earth. That sounds like a reasonably good opening line for October.The object, IRAS 18293−0941, is a binary sy...

4 Okt 29min

There Was a Planet That Swallowed a Moon

There Was a Planet That Swallowed a Moon

What if Venus once had a moon, and then destroyed it?A new study suggests that under plausible conditions, an ancient Venusian moon could have slowly migrated inward, crossed the Roche limit and ultim...

27 Sep 32min

Dyson Spheres: The Heat Has to Go Somewhere

Dyson Spheres: The Heat Has to Go Somewhere

What if the first evidence of an advanced alien civilization isn’t a message, but a star whose energy books don’t quite balance?This week, we explore the strange history and surprisingly real science ...

13 Sep 23min

Rivers Through the Dark

Rivers Through the Dark

Galaxies carry the evidence of their past. When the Milky Way captures a dwarf galaxy or tears apart a globular cluster, it leaves behind long, ghostly ribbons of stars called stellar streams. These s...

6 Sep 27min

Little Red Dots at Cosmic Dawn

Little Red Dots at Cosmic Dawn

The James Webb Space Telescope has uncovered hundreds of tiny red points in the early universe. They are extraordinarily compact, unexpectedly bright and strangely quiet in the X-ray and radio wavelen...

30 Aug 27min

Did the Milky Way Flip?

Did the Milky Way Flip?

The Milky Way looks permanent from our place inside it, a great band of stars stretching across the night sky. But new research suggests our galaxy may once have been oriented in a completely differen...

16 Aug 35min

When Black Holes Twist Spacetime

When Black Holes Twist Spacetime

What happens when a black hole spins? According to general relativity, it doesn't simply rotate in space, it actually drags spacetime around with it.This episode explores the strange phenomenon known ...

2 Aug 38min

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