What in the Universe?

Identify the mystery photos using the list below.  
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What in the Universe?

1 Agatized dinosaur bone cells,
2 Agricultural Fields, Central Valley, CA
3 Agricultural Fields, Netherlands
4 Alpine environment, Swiss Alps
5 Aluvial Fan. California desert
6 Ant head
7 Brain, coronal view of a mouse brain
8 Cancer cells (HeLa)
9 Crop Circles, center pivot irrigation, Mideast
10 Crystallized acetaminophen (Tylenol)
11 Deforestation, Amazonian Basin
12 Draining of Aral Sea, Uzbekistan
13 Dried antibody precipitate
14 Epidermis of a leaf
15 Flies caught insectivorous sundew plant)
16 Galaxy; Spiral galaxy
17 Globular Star Cluster
18 Glomerulus of kidney
19 Granitic batholith, Half Dome, CA
20 Green algae undergoing cell division
21 Head of a tapeworm 
22 Hurricane
23 Ice floes, Greenland
24 Image sensor (CCD from digital camera)
25 Interference patterns in soap film

26    Kidney cell
27 Lava Flows, Maua Loa, Hawaii
28 Lights, urbanization in Europe and Africa
29 Meteor Crater, Arizona
30 Microchip surface
31 Mitotic human cells
32 nebula (Crab Nebula)
33 Neurons
34 Ocean surface, Maui
35 Oil fields, Ventura, CA
36 Plant fibers in paper
37 Pollen Grains
38 Retinal cells (mouse)
39 Sand
40 Sand Dunes, Sarhara Desert
41 Shoreline, Receeding shoreline due to drought, Lake Powell
42 Snowflake
43 Stars, time exposure
44 Stigma with pollen
45 Surf, Point Break, Campus Point, UCSB
46 Tidal flats, Bahamas
47 Trachea, silkworm
48 Vocano, composite volcano, Mt. Shasta, CA
49 Volcano, Olympus Mons, Mars
50 Wing of a butterfly

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