Complete Clue List
Across
1. Anders Angstrom devised this instrument to measure direct and indirect solar radiation (11)
7. Par___ a unit of measure for interstellar space that is equal to 3.26 light-years (3)
8. The "Almagest" treatise on the motions of stars and planetary paths was written by Claudius ___ (7)
9. Test pilot who became the first person to break the sound barrier, Chuck ___ (6)
11. American chemist Helen Murray ___ was awarded the Garvan-Olin Medal in 1980 (4)
12. Common computer term for Random-access memory (3)
14. The main belt asteroid "340 Eduarda" was named after astronomer Heinrich Eduard von ___ (4)
15. Physicist David H. Munro created this programming language in 1996 (6)
18. A machine which uses a stream of air, gas or steam to turn a wheel and produce power (7)
19. English engineer Frank Whittle is credited with inventing the turbo ___ engine (3)
20. American astronomer awarded the Franklin Medal for Physics in 1939 (5,6)
Down
1. President of the American Medical Association 1924-25, William Allen ___ (5)
2. In 1925 this 3M employee was credited with creating Masking Tape (11)
3. Scottish mathematician and physicist who introduced logarithms in 1614, John ___ (6)
4. Robert ___, American physicist and inventor of the first commercial synthesizer (4)
5. The second episode of the American science-fiction series "Firefly" (3,5,3)
6. President of the Massachusetts Institute of Technology 1948 - 1959, James ___ Killian (5)
10. A line of energy in the form of heat or light (3)
13. An 1896 science fiction novel by H. G. Wells, "The Island of Doctor ___" (6)
14. Dutch mathematical physicist awarded the Anne Bennett Prize in 2018, ___ Hollands (5)
16. Pseudonym of the American W19 (nuclear artillery shell) (5)
17. A thermally insulated chamber which turn objects made from clay into pottery, tiles or bricks (4)