Answer:
26 cantons
Explanation:
Zürich (ZH)
Bern / Berne (BE)
Luzern (LU)
Uri (UR)
Schwyz (SZ)
Unterwalden (Obwalden (OW) / Nidwalden (NW))
Glarus (GL)
Zug (ZG)
Freiburg / Fribourg (FR)
Solothurn (SO)
Basel (Basel Stadt (BS)/ Basel Land (BL))
Schaffhausen (SH)
Appenzell (Appenzell Ausserrhoden (AR) / Appenzell Innerrhoden (AI))
Sankt Gallen (SG)
Graubünden (GR)
Aargau (AG)
Thurgau (TG)
Ticino (TI)
Vaud (VD)
Valais / Wallis (VS)
Neuchâtel (NE)
Genève (GE)
Jura (JU)
optical telescope (Hubble), X ray telescope ( Chandra) etc.
get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying.
The astronomical event that represents the great serpent mound is Halley's Comet.
