September 2014

Primordial Origins of (Some) of Earth’s Water

September 29, 2014

With one interstellar conference in the books for 2014, I’ll be headed next for the Tennessee Valley Interstellar Workshop, whose upcoming gathering will be held in Oak Ridge this November. Last week’s coverage of the 100 Year Starship Symposium in Houston has allowed several interesting stories to back up in the queue, and I’ll spend […]

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Closing Out 100YSS: Antimatter, Gravitational Lensing & a Modified Orion

September 26, 2014

I don’t envy the track chairs at any conference, particularly conferences that are all about getting large numbers of scientists into the right place at the right time. Herding cats? But the track model makes inherent sense when you’re dealing with widely disparate disciplines. Earlier in the week I mentioned how widely the tracks at […]

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100YSS: An Encouraging Future for Sails

September 25, 2014

India can take great pride in the successful insertion of its Mangalyaan Mars probe into orbit around the red planet. At a cost of $75 million, the spacecraft is a bargain — Maven, which entered Mars orbit on Sunday, cost almost ten times as much. In an Associated Press story this morning, I noticed that […]

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Starflight: A Multi-Generational Perspective

September 24, 2014

“While other nations try to reach the moon, we are trying to reach the village,” said Julius Nyerere, who after serving as Tanzania’s first president retired to the village of his childhood. Mae Jemison likes to use this quote to introduce what she sees as a major theme of the 100 Year Starship project, which […]

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100YSS: SETI, Sprites and Cutting Costs

September 23, 2014

Gatherings like the 100 Year Starship Symposium have tough organizational choices to make, and the solutions aren’t always obvious. A good part of any aerospace conference is involved in presenting papers, but do you set up a multi-track system or take a single-track approach? In Houston, the 100 Year Starship organization chose multiple tracks: We […]

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The Morning the Earth Stood Still

September 22, 2014

A long time ago in what now seems like a different lifetime, a colleague told me that the best parts of any conference were the accidental encounters in the hallways where you ran into old friends or people whose work you knew about but hadn’t yet met. That was back when I was going to […]

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Habitable Moons: Background and Prospects

September 19, 2014

While I’m in Houston attending the 100 Year Starship Symposium (about which more next week), Andrew LePage has the floor. A physicist and freelance writer specializing in astronomy and the history of spaceflight, LePage will be joining us on a regular basis to provide the benefits of his considerable insight. Over the last 25 years, […]

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New Horizons: Hydra Revealed

September 18, 2014

Since we don’t yet have flight-ready systems for getting to the outer Solar System much faster than New Horizons, we might as well enjoy one of the benefits of long flight times. Look at it this way: For the next ten months, we can look forward to sharper and sharper images and an ever increasing […]

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Crucible for Moon Formation in Saturn’s Rings

September 17, 2014

Hard to believe that it’s been ten years for Cassini, but it was all the way back in January of 2005 that the Huygens probe landed on Titan, an event that will be forever bright in my memory. Although the fourth space probe to visit Saturn, Cassini became in 2004 the first to orbit the […]

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‘Hot Jupiters’: Explaining Spin-Orbit Misalignment

September 16, 2014

Bringing some order into the realm of ‘hot Jupiters’ is all to the good. How do these enormous worlds get so close to their star, having presumably formed much further out beyond the ‘snowline’ in their systems, and what effects do they have on the central star itself? And how do ‘hot Jupiter’ orbits evolve […]

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