This oblique view featuring International Astronomical Union (IAU) Crater 302 on the Moon surface was photographed by the Apollo 10 astronauts in May of 1969. Note the terraced walls of the crater and central cone. Center point coordinates are located at 162 degrees, 2 minutes east longitude and 10 degrees, 1 minute south latitude. One of the Apollo 10 astronauts aimed a handheld 70mm camera at the surface from lunar orbit for a series of pictures in this area. The large crater at right is Keeler (used to be called 302), and to its left is Heaviside. This is on the far side, not on the limb as viewed from Earth. The official designation of this photo is AS10-32-4823.
This oblique view featuring International Astronomical Union (IAU) Crater 302 on the Moon surface was photographed by the Apollo 10 astronauts in May of 1969. Note the terraced walls of the crater and central cone. Center point coordinates are located at 162 degrees, 2 minutes east longitude and 10 degrees, 1 minute south latitude. One of the Apollo 10 astronauts aimed a handheld 70mm camera at the surface from lunar orbit for a series of pictures in this area. The large crater at right is Keeler (used to be called 302), and to its left is Heaviside. This is on the far side, not on the limb as viewed from Earth. The official designation of this photo is AS10-32-4823.

Things You Thought You Knew – Where the Sun Don’t Shine

NASA Apollo, Public domain, via Wikimedia Commons
  • Free Audio
  • Ad-Free Audio

About This Episode

Does being in space mean there is no gravity? What does noon have to do with the Artemis Mission? Neil deGrasse Tyson and comedian Chuck Nice break down weightlessness, planetary alignments, and what is going on on the south pole of the moon.

We explore daytime, nighttime, and why Artemis III is going to the south pole of the moon. Where is the sun at high noon? Depends on where you are in the world. We break down how longitudinal position impacts access to daylight on both Earth and the Moon. What is a cold trap? Find out about the unique conditions on the inside of some lunar craters and in-situ resource utilization. Is this the first step to a lunar colony?

Are astronauts always floating when they’re in space? What does it mean to escape Earth’s gravitational pull? Find out what 0G really is as we explore the concept of weightlessness. What is a translunar injection? We discuss Lagrange points, The Expanse, Ad Astra, and transitioning between objects’ gravitational pulls. Can a person on a rocket tell between 1G of gravity and 1G of acceleration? Is microgravity actually a misnomer?

How rare are planetary alignments? What does it mean for the planets to be aligned? Does that mean that something special will happen or you will have good luck? We discuss the plane of the solar system, the origins of the days of the week, and what it means to be in alignment. That, plus, what is the difference between alignments and conjunctions?

Thanks to our Patrons Tatiana Joine, Marcos Rodriguez, Peter Gordon, Leonard Leedy, RolandP, and Shimon Zig for supporting us this week.

NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free.