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Autumn astronomyBy: James Smith Autumn is my favourite time for observing the night skies. The evenings are cooler, but not yet too cold. The skies get darker earlier, so we don’t have to stay up so late, and we have the best objects to see in autumn. Some of our favourite Southern Hemisphere constellations are in full display. The Southern Cross is easily seen, as well as Orion (including the ‘Pot’) and Canis Major. Taurus, Cancer and Gemini are also visible in autumn. The first two real stars to appear at night are Sirius in the northwest, which is the brightest star, followed by Can...

Image credit: The Cosmic Perspective / Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider and Mark Voit. From Azri -- our original question-asker -- on the topic of how long the Universe has been accelerating: "Just when you mentioned that the universe was almost 7.8 billion years old when started accelerating: I think that calculation is based on a "constant” cosmological constant! what if Dark energy was dynamical !? can one expect more than 8 bill years, lets say almost recently!" If dark energy changes over time -- which it  may -- then it's conceivable that the Universe began a...

and then as March goes on, I'll have an exclusive interview with the Principal Investigator of LIGO, Dave Reitze (so drop me your questions here!), I'll be giving public talks in Portland, OR and in Memphis, TN at MidSouthCon, and then we have some even bigger events coming up in the spring! But there's no reason to dawdle any further; there's some great science to dive into right now on this edition of our Comments Of The Week! Image credit: NASA. real and  virtual gravitons: "If I am understanding correctly, there is a gravitational pull between any two massive bodies and that gravitation...

sixth podcast: on the most distant galaxy (so far) in the Universe! Plus, for those of you who enjoy television appearances, I gave a big recap of some of the biggest news in space, science and the Universe this past week on Portland, OR's local television station, KGW. I'm getting very excited about my public talk at OMSI on April 18th and then my big appearance at Balticon 50 this upcoming Memorial Day weekend in Baltimore, MD. Hopefully I'll get a chance to see some of you, and perhaps meet a few of you for the first time! Now that you've gotten the information, let’s take a trip into ...

The next Starts With A Bang podcast is live for Patreon supporters and goes live for everyone else later this week on SoundCloud; the big Forbes news is that they no longer have autoplay videos, which is fantastic for all of us (including me); and the articles -- if you don't want ads at all -- are all available on a one-week delay over on Medium. And with all that said, let's get into our comments of the week! A device designed to simulate a working cold fusion reaction, but that was in fact a deliberate deception. Image credit: Juan-Louis Naudin, 2003.