What If the Dino-Killing Asteroid Hit Earth Somewhere Else

When Was First Life Born?

Our universe is a mind-bogglingly vast place, and pinpointing the exact moment when first life was born is a real cosmic mystery. Scientists believe that life on Earth emerged around 3.5 to 4 billion years ago, but in the grand scheme of the universe's 13.8-billion-year history, that's relatively recent. It's possible that life could have sprung up elsewhere in the universe even earlier, given the countless planets and potentially habitable environments out there. Until we explore more of space and make new discoveries, the when and where of life's origins beyond Earth remain tantalizing questions that continue to pique our curiosity. Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

Life on Titan?

Life on Titan? Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

The Scariest Moments in Spacewalking History

In 1965, during the Gemini 4 mission, astronaut Ed White became the first American to spacewalk. While it was a historic moment, it was also nerve-wracking as it was a brand-new and untested endeavor. In 2013, Italian astronaut Luca Parmitano faced a terrifying situation as his helmet started filling with water during a spacewalk, prompting an immediate return to the ISS. The 1984 spacewalk by Bruce McCandless, using the Manned Maneuvering Unit, showcased breathtaking views but also highlighted the isolation and potential dangers of untethered spacewalks. The challenges of spacewalking are a great reminder of how much courage and resilience it takes to be an astronaut. Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

10 Things About Our Solar System That Stump scientists

The Solar System formed billions of years ago. The vast majority of the system's mass is in the Sun, which is its center. And even though we live in it, the Solar System still has plenty of secrets to unveil. Strange phenomena, incredible objects, dwarf planets and hybrid meteorites. And the timeless question: what's inside a black hole? Let's take a look at these 10 mysteries about our Solar System that have yet to be solved. Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

WHAT IF YOU LIVED ON KEPLER 22-B?

What would life be like on Kepler-22b? Explore one of the most famous exoplanets ever discovered and imagine its skies, gravity, environment, and whether humans could actually survive on this distant world. #space #kepler22b #exoplanet #science #astronomy #universe #spacefacts #whatif #documentary #cosmos Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]