1 See 51-Down : THIS
2 Ice planet in “The Empire Strikes Back” : HOTH
3 Like Mount Terror and Mount Terra Nova : ANTARCTIC
4 Ally : TEAMUP
5 Co-creator and co-star of Netflix’s “The Upshaws” : SYKES
6 Had a side convo on Zoom, e.g. : IMED
7 Approaches, briefly : MOS
8 Took in a bad way : POACHED
9 Displayed : ONVIEW
10 Narrow peninsula : SPIT
11 Insectoid moon dwellers in H.G. Wells’s “The First Men in the Moon” : SELENITES
12 Texter’s “off-line” : IRL
13 Polish roll : BIALY
14 Corporate figures : LOGOS
15 Blissful patch : EDEN
22 Pair of accessories? : CEES
24 Un color on El Salvador’s flag : AZUL
25 Lake ___, body of water spanning four African countries : CHAD
2 Made it : CAME
27 L.A. museum, with “the” : GETTY
28 Takes to heart : HEEDS
30 Doesn’t breathe easy : SUCKSWIND
32 Find : DISCOVERY
33 Grammy-winning singer who has recorded in several fictional languages : ENYA
34 No longer being drafted, say : SENT
36 Satisfy a midday craving : NOSH
37 Is persuaded of : BUYS
39 Anna ___, first Italian to win an acting Oscar : MAGNANI
42 Mars, e.g. : WARGOD
43 Melodramatic cry of appreciation : MYIDOL
44 Character played by Kieron Moore in “David and Bathsheba” (1951) : URIAH
45 Can’t not, informally : GOTTA
47 Donnybrook : BRAWL
48 “Just made it!” : PHEW
50 Online home services marketplace : ANGI
51 Plural form of 1-Down, in dialect : DESE
52 Mountain biking move akin to a front wheelie : ENDO
53 Calif. school less than an hour’s ride from Tijuana : SDSU
55 Little warbler : TIT
56 Lead follower: Abbr. : DET