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Crossword No17

ACROSS

1 1961 sci-fi novel by Stanisław Lem (7)

5 Antennas for televisual broadcast (1,1,5)

9 Polish-designed brand of portable tape recorders (5)

10 Vessel for culturing cells (5,4)

11 Insecticide made from the chrysanthemum flower (9)

12 Prefix meaning “over” or “above”; the H in HTTP (5)

13 Gherman ___ (1935–2000), cosmonaut, second person to orbit Earth (5)

15 Female sex hormone (9)

18 Device that generates a tomogram (9)

19 Nassim N. ___ (b.1960), author of The Black Swan (2007) (5)

21 A planet’s orbital periods (5)

23 Free-floating cell, such as a blood cell (9)

25 System diagram using graphic symbols (9)

26 The animal and plant life of a region (5)

27 Solid aggregations of cells that may form on muscles or vocal cords (7)

28 ≠ 0 (3-4)

DOWN

1 Temporary phenomenon of the sun’s photosphere (7)

2 The inverse operation to exponentiation (9)

3 The US Air Force’s rapid execution and combat targeting system for ICBM launches (5)

4 Explosive final stage of the life of a massive star (9)

5 Largest moon of Saturn (5)

6 ___ Group, engineering company founded in 1955 (9)

7 The Santa Cruz Institute for Particle Physics (5)

8 __ myrtle, plant native to the North African desert (7)

14 Term for a base 20 numeral system (9)

16 Solid that may be made by splitting a bicone and rotating one of the halves by 90 degrees (9)

17 Monosaccharide sugar whose name is derived from the Latin for “milk” (9)

18 Protease formed in the small intestine (7)

20 Fertile cross between cattle and American bison (7)

22 Sap-sucking insect such as a greenfly (5)

23 1973 convention on endangered species (5)

24 ___ heat island, metropolitan region with temperatures higher than in the surrounding area (5)