Neutron Star is a Books Original review Feb For people who haven t read the book a quick physics test The hero agrees to put his ship on an orbit that will take it to
Neutron Star is a Books [Original review, Feb 2009]For people who haven't read the book, a quick physics test. The hero agrees to put his ship on an orbit that will take it to within one mile of the surface of a neutron star. His employers assure him, correctly, that the ship's hull will stop any form of radiation. Nevertheless, it's a really stupid idea. Why?If you didn't get it, don't feel bad. Beowulf Shaeffer doesn't either, and finds out the hard way.__________________________________[Update, Jul 2014]Since posting the above review, I've read a fair amount of general relativity. It's given me a good opportunity to assess just how stupid this so-called "hard SF" story is.(view spoiler)[To recap, Beowulf Shaeffer is paid by the Puppeteers, a mysterious and secretive alien race, to take his spaceship to within one mile of the surface of a neutron star. He nearly gets ripped apart by the tidal forces. On returning, he successfully blackmails his employers for a bonus: he says that if they don't pay up he will reveal that their planet has no moon. See, if they had a moon, they'd know about tides.This is amazingly bad science. The Principle of Equivalence, the cornerstone of general relativity, says that every frame of reference is locally equivalent to a Minkowskian one. Or, in everyday language, if you're in free fall you don't experience a gravitational force.Of course, this doesn't mean that if someone is in free fall then gravity has no effect on them. That's exactly the mistake Shaeffer and his puppeteer employers make. It means that gravitational forces disappear to first order. There are second order terms; these are the ones you'll find in the Einstein tensor on the left-hand side of the general relativity equation. They in effect give the local curvature of space in terms of tidal forces, i.e. the tendency of closely separated particles to move apart.So we're supposed to believe that the extremely advanced puppeteer civilization doesn't know things about general relativity that any freshman would learn in her first course? Implausible doesn't begin to cover it. (hide spoiler)]. Come to Larry Niven s Universe and meet all the natives Thrints, Bandersnatchi, Puppeteers and a host of other wonderfully created characters.Visit Lookitthat, Down, and Jinx indeed, an entire galaxy of planets found only in these stories that trace man s expansion and colonization throughout Known Space.A spectacular cycle of the future a 10,000 year historyCome to Larry Niven s Universe and meet all the natives Thrints, Bandersnatchi, Puppeteers and a host of other wonderfully created characters.Visit Lookitthat, Down, and Jinx indeed, an entire galaxy of planets found only in these stories that trace man s expansion and colonization throughout Known Space.A spectacular cycle of the future a 10,000 year history of man on Earth and in space Contents Neutron Star Beowulf Shaeffer nv If Oct 66 A Relic of Empire nv If Dec 66 At the Core Beowulf Shaeffer ss If Nov 66 The Soft Weapon nv If Feb 67 Flatlander Beowulf Shaeffer nv If Mar 67 The Ethics of Madness nv If Apr 67 The Handicapped Handicap nv Galaxy Dec 67 Grendel Beowulf Shaeffer nv. Popular Kindle Neutron Star Holy crap was this ever good. I'm not sure how I missed reading any of the Ringworld series before, but with this being the 40th Anniversary, I figured it was time. With epic series like this, I usually hit the 'net to see if there's a recommended reading order, or anything that will help me to "get it" a little more easily. Every site I visited recommended starting with Neutron Star. This is an anthology of 8 short stories (each novelette length,) set in the universe of Ringworld - the future of humanity. Each story stands on it's own as character studies, political and social commentary, scientific exploration and adventure. It's easy to see why Niven is widely regarded as one of the masters of Sci-fi. I'm looking forward to diving into Ringworld next.
NASA Neutron Stars A neutron star is the only place where we can measure this effect, says Harding EGRET observations showed that gamma rays dominate the total radiation emitted by young pulsars, which are rapidly spinning down Moreover, EGRET data showed that variations in the high energy gamma ray emission probably arise from the changing view into the neutron star Definition, Size, Density, Temperature Neutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons Neutron stars are typically about km miles in diameter Their masses range between . and . times that of the Sun, but most are . times that of the Sun. Neutron Stars Definition Facts Space Neutron stars are city size stellar objects with a mass about . times that of the sun Born from the explosive death of another, larger stars, these tiny objects pack quite a punch. What Is a Neutron Star Live Science What is a neutron star Astronomy Essentials EarthSky Feb , What neutron stars are, and are not.If, after the supernova, the core of the star has enough mass, then according to current understanding the gravitational collapse will continue.