Celestia Portable the portable space simulator Celestia is a planetarium with 3-D planet viewing, viewing over 100,000 stars, traveling beyond our galaxy, and more. Version 1.6.1 Rev 2 for Windows, Multilingual 34MB download / 64MB installed (Details) - Support PortableApps.com's development and hosting Celestia Portable works best with the PortableApps.com Platform Geometry of the Universe Can the Universe be finite in size? If so, what is ``outside'' the Universe? The answer to both these questions involves a discussion of the intrinsic geometry of the Universe. At this point it is important to remember the distinction between the curvature of space (negative, positive or flat) and the toplogy of the Universe (what is its shape = how is it connected). It is possible to different curvatures in different shapes. For example, a torus (donut) has a negative curvature on the inside edge even though it is a finite toplogy.
Space diamond, larger than Earth, spotted by astronomers - Technology & science - Space - Space.com Move over, Hope Diamond. The most famous gems on Earth have new competition in the form of a planet made largely of diamond, astronomers say. The alien planet, a so-called "super-Earth," is called 55 Cancri e and was discovered in 2004 around a nearby star in our Milky Way galaxy. The Outer Planets Image: Jupiter's four biggest moons (from left to right): Ganymede, Callisto, Io, and Europa. “Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring--not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive... If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds. ” - Carl Sagan Until Voyager reached the outer solar system we knew very little about the planets that inhabited this region of space. What we have discovered over years of exploration has both excited and mystified us. Come explore the science of the outer planets.
Cell Models For life all cells have basic needs. Cells have diverged in their structure and function to accommodate these survival requirements. Here are some KEY TERMS to help you think, explore and search for similarities and significant differences that have become the characteristics of eukaryote (animal, plant) and prokaryotic (bacteria) cells. Examples might be searching: eukaryote prokaryote reproduction or animal plant cell energy. JSatTrak By: Shawn Gano JSatTrak is a Satellite tracking program written in Java. It allows you to predict the position of any satellite in real time or in the past or future. The Absurdity of Infinity: Astrophysicist Janna Levin Explains Whether the Universe Is Infinite or Finite in Letters to Her Mother – Brain Pickings By Maria Popova In 1998, while on the cusp of becoming one of the most significant theoretical cosmologists of our time, mathematician-turned-astrophysicist Janna Levin left her post at Berkeley and moved across the Atlantic for a prestigious position at Cambridge University. During the year and a half there, she had the time and space to contemplate the question that would eventually become the epicenter of her career — whether the universe is infinite or finite. What began as a series of letters to her mother, Sandy, eventually became an unusual diary of Levin’s “social exile as a roaming scientist,” and was finally published as How the Universe Got Its Spots: Diary of a Finite Time in a Finite Space (public library) — a most unusual and absorbing account of the paradoxes of finitude.
A Rocket To Nowhere A Rocket To Nowhere The Space Shuttle Discovery is up in orbit, safely docked to the International Space Station, and for the next five days, astronauts will be busy figuring out whether it's safe for them to come home. In the meantime, the rest of the Shuttle fleet is grounded (confined to base, not allowed to play with its spacecraft friends) because that pesky foam on the fuel tank keeps falling off. There are 28 Space Shuttle flights still scheduled, firmly or tentatively, through 2010, when the current orbiter is supposed to retire in favor of a yet-to-be-designed replacement (which will not fly until 2014). On the eve of this launch, NASA put the likelihood of losing an orbiter at 1 in 100, a somewhat stunning concession by an agency notorious for minimizing the risk of its prize program.
HyperPhysics Concepts About HyperPhysics Rationale for Development HyperPhysics is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation. PocketQube Kit v1.0 EM — PocketQube Shop Structure Skeletonized Structure, designed for the PocketQube Standard (Pico-satellite class). Aerospace grade aluminium structure with plated finish (flight model only) with two micro-switches for double redundancy (kill switches).
WXtrack Information WXtrack em Português. What the reviewers and users have said: ".. a lovely piece of software" - Dave Garton, Satellite Applications Catapult, UK "WXtrack is free, and is one of the best tracking programs that I have come across" - Radio Active April 2001 "...a satellite tracking program with a superbly crafted tracking window..." - Remote Imaging Group Journal 58 "...as up to date as any.