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ASTR 3 · Lec 1

Nature of the Universe

Fall 2026Gatkine, P.5 units

Seats, time, final and grades

Seats

Open, 9 seats left.

136 of 174 enrolled, lecture and all discussions summed.

Subtract those two and the lecture has 38 places in it. The 9 seats above are what is open in the discussions, and you enroll in a discussion, so that is the figure that decides whether you get in.

Meets

MW 9:30am-10:45am

Lecture only. You also attend a discussion, listed below.

Final

Fri 11 Dec, 8:00am to 11:00am

One exam for the whole class, Los Angeles time.

Read 14 hours ago.

Grades

3.27
predicted, this instructor · 105 grades

105 letter grades, Gatkine, P..

Read 22 minutes ago. This is a recent reading, not a live seat count.

Enroll on the registrar (opens in a new tab) Sign in to watch for an opening

Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

Before you can enroll

From the registrar limited early, then open

Seats are held for entering students who enroll through New Student Orientation sessions beginning July 2, 2026. New student restrictions will be lifted on September 15, 2026 at 8 a.m.

The limit stands until 15 September, and lifts then. dibs still counts this class as one you can take, but not yet.

Discussions

You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.

5 discussions, 4 open: Lab 1B, M 3:00pm-4:50pm, Lab 1C, T 8:00am-9:50am, Lab 1D, W 11:00am-12:50pm, and Lab 1E, W 3:00pm-4:50pm.

  • Lab 1A

    M 11:00am-12:50pm

    Zweig, E.A.

    Closed.

  • Lab 1B

    M 3:00pm-4:50pm

    Magari, N.P.

    Open, 1 seat left.

  • Lab 1C

    T 8:00am-9:50am

    Magari, N.P.

    Open, 6 seats left.

  • Lab 1D

    W 11:00am-12:50pm

    Nagarajan, N.

    Open, 1 seat left.

  • Lab 1E

    W 3:00pm-4:50pm

    Nagarajan, N.

    Open, 1 seat left.

  • Lab 1F

    R 8:00am-9:50am

    No instructors

    Cancelled.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: MW 9:30am-10:45am

Discussions: M 3:00pm-4:50pm · T 8:00am-9:50am · W 11:00am-12:50pm · W 3:00pm-4:50pm

Kinsey Science Teaching Pavilion 1220B

Grades

3.27
predicted, this instructor · 105 grades

Of the 10 other people in the grade record for ASTR 3, the 2 with the most grades: TURNER, JEAN L at 3.38 over 398 grades and LARKIN, JAMES E at 3.20 over 381 grades.

A range
55%
P/NP
5%
D/F/W
5.7%

Full grade history for ASTR 3

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

dibs has read this course’s reviews and none of them say what kind of work it sets, so dibs has nothing to show rather than a guess. Read from 376 reviews about 1 month ago. That is the reviewers being silent, and not a course that sets no work.

Reviews for ASTR 3 Search the reviews for P. Gatkine

Will it still be here

medium risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 15721F
  • 15522W
  • 7122S
  • 11922F
  • 15323W
  • 8523S
  • 13823F
  • 14124W
  • 16024S
  • 11624F
  • 12925W
  • 10025S
  • 11825F
Enrollment by term: 21F 157, 22W 155, 22S 71, 22F 119, 23W 153, 23S 85, 23F 138, 24W 141, 24S 160, 24F 116, 25W 129, 25S 100, 25F 118

Peak 160 · most recent 25F at 118

Seats over time

Filled by 40 over about 2 months

136 of 174 · 9 left in its discussions
17 Aug 12:329 Sep 02:371 Oct 16:42
dibs read 168 of the 556 hours its hourly record covers, 30%, and did not look in 388. dibs had no hourly record before 8 Sep, which is the other 529 of 1085 plotted.136 of 174 enrolled at the newest reading, 22 minutes ago, with 9 left in its discussions. Seats from 17 Aug 12:32 to 1 Oct 16:42, 96 to 136. dibs read 168 of the 556 hours its hourly record here covers, 30%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 388 hours dibs was keeping a record and did not reach this section. Nothing before 8 September at 13:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not: 22 minutes ago.

Show the readings (92)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 16:42 136 174 open - 7 of 22
30 Sep 19:22 136 174 open - 5 of 15
30 Sep 05:22 138 174 open - 5 of 16
29 Sep 14:22 137 174 open - 2 of 4
29 Sep 11:12 136 174 open - 6 of 18
28 Sep 18:32 137 174 open - 2 of 4
28 Sep 15:02 138 174 open - 6 of 19
27 Sep 21:32 135 174 open - 2 of 4
27 Sep 18:12 136 174 open - 6 of 18
27 Sep 01:12 138 174 open - 10 of 32
25 Sep 18:12 139 174 open - 2 of 5
25 Sep 14:42 138 174 open - 2 of 4
25 Sep 11:12 139 174 open - 6 of 18
24 Sep 18:12 138 174 open - 5 of 15
24 Sep 04:12 133 174 open - 9 of 28
23 Sep 01:32 128 174 open - 2 of 4
22 Sep 22:02 129 174 open - 2 of 5
22 Sep 18:32 126 174 open - 3 of 8
22 Sep 11:32 129 174 open - 4 of 11
22 Sep 01:32 128 174 open - 2 of 4
21 Sep 22:02 127 174 open - 2 of 5
21 Sep 18:32 125 174 open - 2 of 4
21 Sep 15:02 126 174 open - 5 of 15
21 Sep 01:12 125 174 open - 14 of 47
19 Sep 03:52 124 174 open - 2 of 4
19 Sep 00:32 122 174 open - 2 of 3
18 Sep 22:02 124 174 open - 7 of 22
18 Sep 01:12 122 174 open - 3 of 7
17 Sep 19:22 123 174 open - 2 of 5
17 Sep 15:52 125 174 open - 3 of 5
17 Sep 11:12 123 174 open - 4 of 12
17 Sep 00:52 125 174 open - 2 of 4
16 Sep 21:22 126 174 open - 2 of 5
16 Sep 17:52 125 174 open - 5 of 14
16 Sep 04:12 123 174 open - 4 of 12
15 Sep 17:02 125 174 open - 2 of 5
15 Sep 13:52 134 174 open - 2 of 5
15 Sep 09:42 135 174 open - 3 of 8
15 Sep 02:22 134 174 open - 2 of 5
14 Sep 22:52 135 174 open - 3 of 7
14 Sep 16:12 134 174 open - 12 of 39
13 Sep 02:52 135 174 open - 9 of 26
12 Sep 01:22 136 174 open - 2 of 3
11 Sep 23:02 129 174 open - 2 of 3
11 Sep 21:32 136 174 open - 9 of 33
10 Sep 13:40 129 174 open - 5 of 13
10 Sep 01:40 129 165 open - 10 of 25
9 Sep 01:40 127 165 open - 2 of 2
9 Sep 00:40 127 155 open - 2 of 3
8 Sep 22:40 127 165 open - 5 of 21, 11 no hourly record
8 Sep 02:40 127 155 open - no hourly record
7 Sep 01:40 126 155 open - no hourly record
5 Sep 02:40 127 155 open - no hourly record
3 Sep 11:27 120 155 open - no hourly record
3 Sep 01:40 120 147 open - no hourly record
2 Sep 01:40 118 147 open - no hourly record
1 Sep 01:40 119 147 open - no hourly record
28 Aug 01:40 116 147 open - no hourly record
27 Aug 22:40 113 147 open - no hourly record
27 Aug 21:40 116 147 open - no hourly record
27 Aug 20:40 113 147 open - no hourly record
27 Aug 19:40 116 147 open - no hourly record
26 Aug 00:40 113 147 open - no hourly record
25 Aug 23:40 106 147 open - no hourly record
25 Aug 20:40 113 147 open - no hourly record
25 Aug 19:55 106 147 open - no hourly record
25 Aug 18:55 113 147 open - no hourly record
24 Aug 10:55 106 147 open - no hourly record
22 Aug 01:55 106 137 open - no hourly record
22 Aug 00:55 103 137 open - no hourly record
21 Aug 23:55 102 137 open - no hourly record
21 Aug 22:55 106 137 open - no hourly record
21 Aug 21:55 102 137 open - no hourly record
21 Aug 20:55 106 137 open - no hourly record
21 Aug 19:55 102 137 open - no hourly record
21 Aug 18:55 103 137 open - no hourly record
21 Aug 15:55 102 137 open - no hourly record
21 Aug 14:55 103 137 open - no hourly record
21 Aug 13:55 102 137 open - no hourly record
20 Aug 17:55 103 137 open - no hourly record
19 Aug 17:55 96 137 open - no hourly record
19 Aug 15:55 96 127 open - no hourly record
19 Aug 14:55 96 137 open - no hourly record
19 Aug 13:55 96 127 open - no hourly record
19 Aug 11:55 96 137 open - no hourly record
18 Aug 20:55 96 127 open - no hourly record
18 Aug 01:55 97 127 open - no hourly record
17 Aug 22:55 96 127 open - no hourly record
17 Aug 21:55 97 127 open - no hourly record
17 Aug 20:55 96 127 open - no hourly record
17 Aug 19:55 97 127 open - no hourly record
17 Aug 12:32 96 127 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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