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Project Thor was an idea for a weapons system that launches telephone pole-sized kinetic projectiles made from tungsten from Earth's orbit to damage targets on the ground. Jerry Pournelle created the concept while working in operations research at Boeing in the 1950s before becoming a science-fiction writer. [8] [9]
Parts-per-million chart of the relative mass distribution of the Solar System, each cubelet denoting 2 × 10 24 kg. This article includes a list of the most massive known objects of the Solar System and partial lists of smaller objects by observed mean radius. These lists can be sorted according to an object's radius and mass and, for the most ...
A spacetime diagram is a graphical illustration of locations in space at various times, especially in the special theory of relativity.Spacetime diagrams can show the geometry underlying phenomena like time dilation and length contraction without mathematical equations.
Thor-Agena: Earth Success: First Canadian satellite (on American rocket), first satellite not constructed by the US or USSR October 2 US: Explorer 14 (EPE-B) Thor-Delta A: Earth Success NASA spacecraft instrumented to measure cosmic-ray particles, trapped particles, solar wind protons, and magnetospheric and interplanetary magnetic fields ...
Interior of a Stanford torus, painted by Donald E. Davis Collage of figures and tables of Stanford Torus space habitat, from Space Settlements: A Design Study book. Charles Holbrow and Richard D. Johnson, NASA, 1977. The Stanford torus is a proposed NASA design [1] for a space settlement capable of housing 10,000 to 140,000 permanent residents. [2]
The Earth Similarity Index (ESI) is a proposed characterization of how similar a planetary-mass object or natural satellite is to Earth. It was designed to be a scale from zero to one, with Earth having a value of one; this is meant to simplify planet comparisons from large databases. The scale has no quantitative meaning for habitability.
This week, learn why a lunar time scale is needed before humans return to the moon, meet the faces of Scotland’s ancient past, spy “salty licorice” cats, and more.
The year 1966 saw the peak and the end of the Gemini program.The program proved that docking in space and human EVA's could be done safely. It saw the first launch of the Saturn IB rocket, an important step in the Apollo program, and the launch of Luna 9, the first spacecraft to make a soft landing on a celestial object (the Moon).