Q&A 101: How Do We Know Meteorites Came From Mars? And More... Featuring Dr. Nick Cowan from McGill
In this week's questions show, I explain how scientists know that meteorites came from Mars, is it dangerous to look for alien civilizations, what citizen science projects to get involved in, and more. Featuring Professor Nick Cowan from McGill University.
Watch the video here:
Just a reminder, I'm going to be interviewing Dr. Robert Zubrin, founder of the Mars Society on Friday at 10:00 pm Pacific Time. You can watch the live video here:
Comments (7)
ตัดนิ้วของคนมาล้านคน แล้วต่อนิ้วคืนกลับให้เขาอย่างเดิม ในขณะที่จักรวาลเราไม่สามรถที่จะนับนิ้วของใครได้เลย..มั่วเอาเท่านั้น
radiation of many different speeds, depending on the point of origin, pole or equator that interlocks and intermeshes and creates a state of bonding, locking hitherto unseen called an electron, hence electon exchange in many different strengths of valance shells. Once we stop limiting light to something we use to see with and unlock its ability to easily create a bond with another radiation source, we will be stronger, richer, more intelligent beings
Dear Fraser and other readers. Close your eyes and think of Fame and E=MC2 and you will easily see that spinning suns and stars and atoms too emit (please read time in Japanese =an outwardly spiralling
Meteorites from Mars follow-up question. Good explanation, Fraser. But, do they have any idea how long ago any particular rock got blasted from Mars surface? HOW do they know what the Mars atmosphere was like "back then?"
Yes, there are other techniques you can use to determine how old a sample is.
Fraser: As always, I enjoy your presentations. I understand your explanation of how scientists determine the origin of meteorites from Mars by analyzing trapped gas in them. Can they, or have they, identified meteorites from other planets of the solar system?
Yes, they've found them from the Moon, Venus and even Vesta. But they have different techniques for those.