Lights in the sky

Strange lights in the sky over DC, southwest of Bethesda from about 2:50 - 3am this morning. A steady, punctuated flickering, red and blue, for a while, not intermittent flashes. My Scully hypothesis is that it was a) police lights or b) distant lightning. Didn't really look like either of those. I'm still formulating my Mulder hypothesis.

Did anyone else see them?

Internet gleanings/current events

Some cool stuff in recent news:

First, this. Astronomers have discovered an Earth-like planet orbiting a red dwarf, Gliese 581, about 20 light-years away. It's in the habitable zone, meaning that water could exist in liquid form on the surface. Life, Unbounded explains:

With a 37 day orbit (putting it about 0.15 AU from the 1/3rd solar mass star) there's a good chance that GL 581 g is tidally locked - with a permanent day and night side, although it's by no means clear that tidal locking is inevitable. This poses significant questions about any climate on the planetary surface - something astronomers and planetary scientists have been worrying about for a while for this kind of scenario. A thick enough atmosphere and thermal transport could help even out the drastic day/night temperature difference and keep things stable.

 And then this: two dolphin species, the Guyana dolphin and the bottlenose dolphin, have been observed to alter the structure of their calls during interspecific interactions. This is cool for several reasons: first, it adds to our evidence that dolphins are skilled mimics. Secondly, it opens the possibility that these two different species could be capable of communicating with each other in some way. From the Beeb:

When bottlenose dolphins swim together, they emit longer, lower frequency calls, that are modulated.

In contrast, Guyana dolphins usually communicate using higher frequency whistles that have their own particular structure.

But often, the two species swim together in one group. These interactions are usually antagonistic, as the larger bottlenose dolphins harass the smaller Guyana dolphins.

When the two dolphins gather, they produce quite different calls, Dr May-Collado has discovered.

Crucially, calls emitted during these multi-species encounters are of an intermediate frequency and duration.

In other words, the dolphins start communicating in a style that is somewhere between those of the two separate species

In sadder news, Shiloh, one of the bottlenose dolphins at the National Aquarium in Baltimore, has died after a long illness. She was the mother of Chesapeake, the first calf born in captivity at the Aquarium, and the grandmother of Bayley, who is now about two years old. Shiloh was estimated to be about 31 years old, which isn't bad for a dolphin, but the news still came as a shock. I studied Shiloh's whistles for more than a year. Her contact call was a pretty, modulated upsweep with which I became very familiar. I'm going to miss her. So long, Shiloh, and thanks for all the fish.

And finally, I went to hear Richard Dawkins and Neil DeGrasse Tyson speak at Howard University the other day. The talk was an unscripted chat about the "poetry of science". Tyson spent a little too much time showboating - I would have like to hear more from Dawkins, devoted little fangirl that I am - but overall it was most enjoyable. I have to say, though...  Tyson was voted World's Sexiest Astrophysicist by People Magazine in 2000, but that Richard Dawkins is foxy. That hyperliterate Oxford-honed diction, that silver hair, that sultry voice... sigh.

Oh, and there are lots of new songs in the works: the Gargle Blasters are working on a cover of Pink Floyd's Young Lust... ooh, I need a dirty woman.



Coming attractions:

• The finished version of Homeopathy (in both censored and uncensored form... because this is a family blog)
• The finished version of Uncertainty (now with 100% more awesome due to sax solo by my dad)
•  More Young Lust
• Tabula Rasa (too full of angst for immediate release)
• The Night You Can't Remember (Magnetic Fields cover!)
• The Internet Song (work in progress)

Man, we almost have a setlist! Watch out, open mic night - the Gargle Blasters are coming.

Ring of fire

I'm in Hawaii right now, and it's been blowing my mind at every turn. Today's adventure: a hike around an active volcano, Kilauea. We came to the caldera's edge just after sunset and waited for the sky to get dark. As the light faded, the glow from the lake of lava inside the crater got brighter and brighter. Until it looked like this (click for monstrously large version) :

Then over to the Observatories at Mauna Kea, the world's largest astronomical observatory. The combined light-gathering power of the telescopes on the volcano summit is sixty times greater than that of the Hubble Space Telescope. The Keck Telescope and twelve others are at the top, but we went up halfway to the visitor center, where volunteers with telescopes let us use them to gawk at distant astronomical objects. I saw the Ring Nebula, 2,300 light years away. There were more stars in the sky than I had ever seen. The Milky Way was a carpet of tiny lights. "Beautiful" doesn't quite capture it.

Mind = blown.