Tag Archives: Earth

Subsurface oceans everywhere and the possible pervasiveness of life

Well, it now looks like Ganymede, one of Jupiter’s moons, has a subsurface ocean. Ganymede’s great distinction among moons – apart from its size – is that it has its own magnetic field. Hubble has managed to track that field’s … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , | 4 Comments

Comet Siding Spring: A Close Encounter with Mars

In case you haven’t heard yet, there’s a comet headed for Mars.  It will pass pretty close, close enough for the various orbiters we have in there to get pictures, and for them to be in a little bit of … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , , | 2 Comments

The real goal and challenge of establishing off-world colonies

David Warmflash (a very cool name) has a post up at Discovery looking at the issues with establishing off world colonies: Forget Mars. Here’s Where We Should Build Our First Off-World Colonies. The collective space vision of all the world’s countries … Continue reading

Posted in Space | Tagged , , , , , , , , | 8 Comments

The evolutionary paradox of sex

Megan Scudellar has a fascinating article up at The Scientist Magazine on the mystery of why sexual reproduction evolved to be so pervasive: The Sex Paradox | The Scientist Magazine®. Sarah “Sally” Otto was sitting in a lab meeting of evolutionary … Continue reading

Posted in Zeitgeist | Tagged , , , , , , | 4 Comments

Cosmic rays becoming an increasing problem for microchips. Threat to Moore’s Law?

When I first saw the title of this article, I thought it might be an alarmist piece of some kind about passenger safety from higher radiation doses while in the air, but it’s actually about a broader and more serious … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , | Leave a comment

xkcd: Surface areas in the solar system

My initial reaction to this was, where are the gas giants?  Then I woke up and realized this was about definable surfaces.  (Click through for full sized version.) Note the tiny size of Pluto in relation to moons like The … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , | 2 Comments

New NASA images highlight U.S. air quality improvement

As something of a balance against the environmental issues we’ve been discussing, here is an encouraging sign of progress: New NASA images highlight U.S. air quality improvement — ScienceDaily. Anyone living in a major U.S. city for the past decade may have … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , | 4 Comments

Did a cosmic fluke make life on land possible?

When pondering how likely life is to develop on other worlds, or what types of life might develop, we always have to always bear in mind that we currently only have one example to work with.  And that example has … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , , , , | 3 Comments

How life transformed the planet – Robert Hazen – Aeon

In my post on how similar or dissimilar life might be if evolution started over, I observed that much of the environment that life operates within is itself generated by other life.  It turns out that goes deeper than I … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , , | 3 Comments

If evolution started over, how similar would its results be?

Zach Zorich has an interesting piece at Nautilus asking if the world began again, would life as we know it exist? In less than five milliseconds, a Hydromantes salamander can launch its tongue—including the muscles, cartilage, and part of its skeleton—out of … Continue reading

Posted in Science | Tagged , , , , , , , , , , , | 3 Comments