In 1611 Johannes Kepler introduced a second convex lens, giving this instrument greater power
Buckminster Fuller used "energetic synergetic geometry" to build these structures
The 1st automated instrument to analyze this genetic material's structure was developed in the mid-1980s
It's the element whose atomic weight is closest to its atomic number
Inventors of these include Georges Leclanche, Gaston Plante & Alessandro Volta
Life here was the subject of the 1965 book "World Without Sun"
After 1,400 orbits it fell back to Earth January 4, 1958 & burned up
In 1977 the U.S. banned these that used freon as the propellant
Anthracite, the highest grade of coal, is composed almost entirely of this element
Scientists once tried to estimate the Earth's age by measuring the level of this substance in the ocean