| Summer Solar Session #8 |
Centennial Observatory |
Wednesday, July 15, 2026 |
1:30-3:30 p.m. |
Free |
| Annual Castle Rocks Star Party solar viewing |
Castle Rocks Visitor Center, Almo, Idaho |
Friday, July 17 & Saturday, July 18, 2026 |
12:00-5:00 p.m. |
Free |
| Annual Castle Rocks Star Party telescope viewing |
The Lodge, Castle Rocks State Park |
Friday, July 17 & Saturday, July 18, 2026 |
Starting at 9:30 p.m. |
Free (park use fees apply) |
| Summer Solar Session #9 |
Centennial Observatory |
Wednesday, July 22, 2026 |
1:30-3:30 p.m. |
Free |
| Peak Pluto in 2026 |
Centennial Observatory |
Friday, July 24, 2026 |
1:45-2:15 a.m. |
Free |
| Summer Solar Session #10 |
Centennial Observatory |
Wednesday, July 29, 2026 |
1:30-3:30 p.m. |
Free |
| Summer Solar Session #11 |
Centennial Observatory |
Wednesday, August 5, 2026 |
1:30-3:30 p.m. |
Free |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, August 8, 2026 |
9:45-11:45 p.m. |
Free |
| Summer Solar Session #12 |
Centennial Observatory |
Wednesday, August 12, 2026 |
1:30-3:30 p.m. |
Free |
| Summer Solar Session #13 |
Centennial Observatory |
Wednesday, August 19, 2026 |
1:30-3:30 p.m. |
Free |
| Summer Solar Session #14 |
Centennial Observatory |
Wednesday, August 26, 2026 |
1:30-3:30 p.m. |
Free |
| Deep partial lunar eclipse |
Centennial Observatory |
Tuesday, August 28, 2026 |
8:00 p.m.-12:00 a.m. |
Free |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, September 12, 2026 |
8:45-10:45 p.m. |
Free |
| International Observe the Moon Night |
Centennial Observatory |
Saturday, September 19, 2026 |
8:30-9:30 p.m. |
Free |
| Closest approach of Saturn in 2026 |
Centennial Observatory |
Sunday, October 4, 2026 |
1:15-1:45 a.m. |
Free |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, October 10, 2026 |
8:00-10:00 p.m. |
Free |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, November 10, 2026 |
6:15-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, November 14, 2026 |
6:15-9:00 p.m. |
Free |
| Best morning apparition of Mercury in 2026 |
Centennial Observatory |
Thursday, November 19, 2026 |
7:15-7:30 a.m. |
Free |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, November 24, 2026 |
6:15-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, December 8, 2026 |
6:00-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, December 12, 2026 |
6:00-9:00 p.m. |
Free |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, December 22, 2026 |
6:00-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Twin Falls Parks & Recreation Cabin Fever Day Solar Viewing |
Centennial Observatory |
Saturday, January 2, 2027 |
11:00 a.m.-2:00 p.m. |
Free |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, January 9, 2027 |
6:30-9:00 p.m. |
Free |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, January 12, 2027 |
6:30-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, January 26, 2027 |
6:45-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, February 9, 2027 |
7:00-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, February 13, 2027 |
7:00-9:00 p.m. |
Free |
| Telescope Tuesday |
Centennial Observatory |
Tuesday, February 23, 2027 |
7:15-9:00 p.m. |
$1.50, ages 6 & under free, or free with planetarium admission |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, March 13, 2027 |
7:30-9:30 p.m. |
Free |
| Earth Hour Telescope Viewing |
Centennial Observatory |
Saturday, March 27, 2027 |
8:30-9:30 p.m. |
Free |
| Monthly Free Star Party |
Centennial Observatory |
Saturday, April 10, 2027 |
9:00-11:00 p.m. |
Free |
| International Astronomy Day Solar Viewing |
Centennial Observatory |
Saturday, May 8, 2027 |
11:00 a.m.-4:00 p.m. |
Free |
| International Astronomy Day Telescope Viewing/Monthly Free Star Party |
Centennial Observatory |
Saturday, May 8, 2027 |
9:15-11:15 p.m. |
Free |