Posts by Laurel Denizen

Do stars have a sound?

NGC 3603 is a prominent star-forming region in the Carina spiral arm of the Milky Way, about 20,000 light-years away. (NASA/ESA/Hubble Heritage/STScI/AURA/ESA-Hubble Collaboration)

(NASA/ESA/Hubble Heritage/STScI/AURA/ESA-Hubble Collaboration)

In a new study published in Physical Review Letters, researchers present evidence that stars might make a sound (sort of).

Continue reading the news article here.

Happy Pi Day 2015!

Martin Krzywinski Pi Data Visualization

Progression and transition for the first 1,000 digits of the number π by Martin Krzywinski.

Visit his website here to learn more.

New supermoon – and Black Moon – on February 18, 2015

New Moon

The new moon comes on February 18, 2015, and then reaches perigee less than one-third day later. It’s the closest new moon of the year, which qualifies it as a new moon supermoon. It’s also a seasonal Black Moon; that is, the third of four new moons in the current season (December solstice to March equinox). The moon reaches lunar perigee – the moon’s closest point to Earth for the month – some 7.6 hours after the moon turns new at 23:47 UTC (6:47 p.m. CDT) on February 18. Don’t expect to see anything special, not even a little crescent like that in the photo above. A full moon supermoon is out all night – brighter than your average full moon. But a new moon supermoon is only out during the daytime hours, hidden in the sun’s glare.

Continue reading the full article from EarthSky.org here.

What if the universe had no beginning?

Image via mondolithic.com

Are you seeing the stories this week suggesting that the Big Bang didn’t happen? According to astrophysicist Brian Koberlein – a great science communicator at Rochester Institute of Technology with a popular page on G+ – that’s not quite what the new research (published in early February 2015 Physics Letters B, has suggested. The new study isn’t suggesting there was no Big Bang, Koberlein says. It’s suggesting that the Big Bang did not start with a singularity – a point in space-time when matter is infinitely dense, as at the center of a black hole. How can this be? Koberlein explains on his website:

The catch is that by eliminating the singularity, the model predicts that the universe had no beginning. It existed forever as a kind of quantum potential before ‘collapsing’ into the hot dense state we call the Big Bang. Unfortunately many articles confuse ‘no singularity’ with ‘no big bang.’

Continue reading the article here.