In this week's questions show, I explain why I don't think we always need to be realistic, if galaxies in the local group are bound together gravitationally, and what we should call Earth-moving equipment on Mars.
00:20 Be realistic.
04:24 Are galaxies in the local group bound?
05:56 Will gravitational waves give us advanced notice of collisions?
08:36 Will we ever be able to live outside on Mars?
10:16 Are we going to ruin Mars too?
12:42 Mars-moving equipment?
14:07 Could the Moon have an atmosphere?
15:51 Liquid water on the surface of Mars
16:49 Is there a business case for Mars?
19:17 What about nitrogen?
21:21 What will need to come from Earth?
23:06 Are there planets with less gravity than Earth?
Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week, and answer them here.
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Women who’ve had stuff in space named after them? Hanny must be Hanny’s Vorwerp, and I wouldn’t be surprised to learn that Pamela Gay has had an asteroid named after her.
Aren’t these the girls of playboys centerfold of the year resp. 1905 (relativity theory by A. Einstein), 1609 (Keplers planetary motion), 1687 (Newtons gravity theory) and 1960 (string theory) ?
They have all been featured on the She’s an Astronomer section at the Galaxy Zoo blog.
Alice Sheppard
Hanny van Arkel
Kate Land
Pamela L. Gay
I’m with Navneeth. These four are amoung the many contributing zooites at Galaxyzoo.org
Navneeth is right and I don’t have another answer…
the puzzle has to be with astro biology?, looking for life across the universe
Wow! I’m honoured! I sure don’t get the puzzle, though – that is, if we were supposed to work it out from the picture. (Which I didn’t spot in advance.)
That will teach me to keep up with Universe Today in future 🙂
Wow, someone featured in a Universe Puzzle drops by!
Alice, the picture has nothing to do with the puzzle (but, in future it might! you’ve given me an idea!)
Here are the five Universe Puzzles to date, along with the answers:
1) What do Ferdinand, David, and Nicholas have in common? They have galaxies named after them
2) What’s the next number in the sequence? 1655, 1671, 1672
A: 1684
3) Which is the ‘odd one out’? And why? aragonite, diamond, ice, olivine
A: aragonite (several answers, e.g. it’s the only one found only on Earth, so far; it’s the only one known to be made by biological processes)
4) What’s the next number in the sequence? 401, 172, 85.2
A: 42.5
5) What do the following have in common? Alice, Hanny, Kate, Pamela
A: They are all featured in Galaxy Zoo’s She’s an Astronomer