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  2. RV Atlantic Explorer - Wikipedia

    en.wikipedia.org/wiki/RV_Atlantic_Explorer

    The ship was constructed in 1982 as a Class III ocean-going environmental research vessel. In it was known as Seward Johnson II, owned by Harbor Branch Oceanographic Institute and based in Ft. Pierce, Florida. BIOS purchased the vessel in October 2005, and modified it to better support the planned activities.

  3. Archimedes' heat ray - Wikipedia

    en.wikipedia.org/wiki/Archimedes'_heat_ray

    Archimedes is purported to have invented a large scale solar furnace, sometimes described as a heat ray, and used it to burn attacking Roman ships during the Siege of Syracuse (c. 213–212 BC). It does not appear in the surviving works of Archimedes and there is no contemporary evidence for it, leading to modern scholars doubting its existence.

  4. Space-based solar power - Wikipedia

    en.wikipedia.org/wiki/Space-based_solar_power

    Inaccessibility: Maintenance of an earth-based solar panel is relatively simple, but construction and maintenance on a solar panel in space would typically be done telerobotically. In addition to cost, astronauts working in GEO are exposed to unacceptably high radiation dangers and risk and cost about one thousand times more than the same task ...

  5. Heathkit - Wikipedia

    en.wikipedia.org/wiki/Heathkit

    Oscilloscope OL-1 from 1954, the company's first with a relatively small 3-inch CRT which allowed for a highly competitive price of US$ 29.50 (equivalent to $345 in 2024) for the DIY kit. [ 1 ] Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company .

  6. Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania

    There are 67 short-line, freight railroads operating in Pennsylvania, the highest number in any U.S. state. [205] With more than four million inter-city rail passengers in 2018, Philadelphia's 30th Street Station is Amtrak's third-busiest train station in the nation after Penn Station in Manhattan and Union Station in Washington, D.C. , [ 208 ...

  7. Planetary habitability in the Solar System - Wikipedia

    en.wikipedia.org/wiki/Planetary_habitability_in...

    Planetary habitability in the Solar System is the study that searches the possible existence of past or present extraterrestrial life in those celestial bodies. As exoplanets are too far away and can only be studied by indirect means, the celestial bodies in the Solar System allow for a much more detailed study: direct telescope observation, space probes, rovers and even human spaceflight.

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