Approximately every eleven years, our sun experiences a cycle in which its magnetic poles flip. During this cycle, solar flares and sunspot activity increase, and then the sun returns to a state of relative calm.
These solar cycles have been tracked for over two hundred years and are among the best-recorded aspects of solar astronomy.
These extremes, known ... Show More
Yesterday
Yellow River: The Cradle of Chinese Civilization
Tell me your favorite episode for the 6th anniversary show! For thousands of years, one river has shaped the history, culture, and destiny of China. Its waters helped give birth to Chinese civilization, yet its floods brought destruction on a scale few rivers in the world can mat ... Show More
15m 35s
Jun 11
Nuke the Moon: Project A119
Tell me your favorite episode for the 6th anniversary show! At the height of the Cold War, the United States considered a plan so audacious that it sounds like science fiction: detonating a nuclear weapon on the Moon. Known as Project A119, it was born from fear, prestige, and th ... Show More
14m 43s
Apr 2025
Mars' Organic Mystery Unveiled, Parker Solar Probe's Solar Close Encounter
SpaceTime Series 28 Episode 40
The Astronomy, Space and Science News Podcast
Largest Organic Molecule Discovered on Mars, Parker Solar Probe's Close Encounter with the Sun, and New Insights into Earth's Formation
In this episode of SpaceTime, we discuss the remarkable discovery m ... Show More
24m 40s
Sep 2024
Chasing auroras with the Aurora Guy
<p>We are near solar maximum, a time in the solar cycle when our Sun is most active. That means more sun spots, coronal mass ejections, and auroras on worlds across our solar system. This week, Vince Ledvina, also known as the Aurora Guy, joins Planetary Radio to discuss the scie ... Show More
59m 8s
Jan 2025
Parker Solar Probe's Record-Breaking Journey, Mysterious X-ray Flares, and Solar Cycle's Weather Impact: S28E03
<b>SpaceTime Series 28 Episode 03</b><br /><b>Parker Solar Probe's Historic Journey</b><br />NASA's Parker Solar Probe has made history by becoming the fastest man-made object, surviving a record-breaking close approach to the Sun's surface. The probe, travelling at an unpreceden ... Show More
26m 46s