Space and astronomy news
In a recent post I wrote about a study that argued dark energy isn’t needed to explain the redshifts of distant supernovae. I also mentioned we shouldn’t rule out dark energy quite yet, because there are several independent measures of cosmic expansion that don’t require supernovae. Sure enough, a new study has measured cosmic expansion …
The universe is expanding. When we look in all directions, we see distant galaxies speeding away from us, their light redshifted due to cosmic expansion. This has been known since 1929 when Edwin Hubble calcuated the relation between a galaxy’s distance and its redshift. Then in the late 1990s, two studies of distant supernovae found …
Continue reading “New Research Casts A Shadow On The Existence Of Dark Energy”
LIGO is so sensitive it can hear the quantum fluctuations of a vacuum. But by squeezing light it can make them a bit more quiet.
It’s a mystery that’s puzzled astronomers for years. Which came first, supermassive black holes or the galaxies that surround them?
In this week’s episode of the Weekly Space Hangout, we’re joined by Carolyn Collins Petersen, aka “The Space Writer”. We talk about what it takes to write Planetarium Show, and Carolyn’s impressive experience as a space journalist before and after the arrival of the internet.
Yes, it’s that time of year again when everyone struggles with what gifts to buy their family and friends for their holiday-of-choice. Whether you are hoping to foster a love of space and science in a young child, or want to surprise that special adult “Super Space Nerd,” we here at Universe Today are here to help our readers out with ideas and recommendations to fit virtually any budget, experience level, and area of interest, including telescopes, books, and other items that the “space/science geek” in your life would love to receive!
Host: Fraser Cain (@fcain) Special Guest:Dr. Rhys Taylor, Former Arecibo Post Doc; Current research involves looking for galaxies in the 21cm waveband. Guests: Morgan Rehnberg (cosmicchatter.org / @MorganRehnberg ) Alessondra Springmann (@sondy)
Host: Fraser Cain (@fcain) Guests: Morgan Rehnberg (cosmicchatter.org / @cosmic_chatter) Brian Koberlien (@briankoberlein) Alessondra Springmann (@sondy) Matthew Francis (CosmoAcademy.org, @DrMRFrancis)
Host: Fraser Cain (@fcain) Guests: Morgan Rehnberg (cosmicchatter.org / @cosmic_chatter), Brian Koberlien (@briankoberlein)
Recently rumors have been flying that the BICEP2 results regarding the cosmic inflationary period may be invalid. It all started with a post by Dan Falkowski on his blog Resonaances, where he claimed that the BICEP2 had misinterpreted some data, which rendered their results invalid, or at least questionable. The story was then picked up by …
Continue reading “Are the BICEP2 Results Invalid? Probably Not.”