Computer simulations suggest that Pluto might have as many as ten undiscovered additional moons.
Computer simulations suggest that Pluto might have as many as ten undiscovered additional moons.
The planet already has five, so if this is true space is really crowded there, which might pose a problem for the New Horizons spacecraft that plans to fly past in 2015.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Computer simulations suggest that Pluto might have as many as ten undiscovered additional moons.
The planet already has five, so if this is true space is really crowded there, which might pose a problem for the New Horizons spacecraft that plans to fly past in 2015.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
They will have to come up with a rule on exactly what could be called a moon.
The earth at times has more than one rock in orbit around it.
Good point – I was wondering about that myself. How big does a “rock” have to be to be considered a moon? And kind of ironic that Pluto, demoted from Planet to “Dwarf Planet”, leaves the Earth in the dust when it comes to moons. It would almost seem to me that any relatively large body orbiting the Sun which has moons of its own ought to be classified as a planet. But then I thought I read that at least one of the large asteroids has a “moon”. The whole issue is a bit murky…
Or another way to look at the New Horizon mission is that it will enter a target-rich environment.