Astronomy Cast Questions Show - Stellar Roche Limits, Seeing Black Holes & Water on Mars

<p><strong>From January 1, 2009.</strong></p> <p>This week we find out when stars get torn apart from gravity, how we can see supermassive black holes, how liquid water could have existed on Mars in the past, and much more.</p> <p> </p> <p><em>- Is there a “stellar” Roche Limit for binary stars?</em></p> <p><em>- Why are black holes seen as bright areas in astronomical images?</em></p> <p><em>- How could there have been water on Mars in the past?</em></p> <p><em>- Are there lots of jobs out there for prospective astronomers?</em></p> <p><em>- What evidence do we have that the Universe was small, hot and dense just before the Big Bang?</em></p> <p><em>- What legal issues are there for astronomy and space exploration?</em></p> <p><em>- Why don’t planets “twinkle”?</em></p> <p> </p> <p>We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.<span class= "Apple-converted-space"> </span></p> <p>Just visit: <a href= "https://www.patreon.com/365DaysOfAstronomy">https://www.patreon.com/365DaysOfAstronomy</a> and donate as much as you can!</p> <p>Share the podcast with your friends and send the Patreon link to them too!<span class="Apple-converted-space"> </span></p> <p>Every bit helps! Thank you!</p> <p>------------------------------------</p> <p>Do go visit <a href= "http://www.redbubble.com/people/CosmoQuestX/shop">http://www.redbubble.com/people/CosmoQuestX/shop</a> for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!</p> <p><a href= "http://cosmoquest.org/Donate">http://cosmoquest.org/Donate</a> This show is made possible through your donations.<span class= "Apple-converted-space"> </span></p> <p>Thank you! (Haven't donated? It's not too late! Just <a href= "http://cosmoquest.org/Donate">click</a>!)</p> <p>------------------------------------</p> <p>The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. <a href= "http://www.psi.edu">http://www.psi.edu</a></p> <p>Visit us on the web at <a href= "http://365DaysO