ASTR 4 · Dis 1A
Black Holes and Cosmic Catastrophes
Fall 2026 · An unnamed TA · 4 units
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.
Open on the registrar (opens in a new tab)- Status
- Open
- Restrictions read 12 hours ago.
- Enrolled
- 27 of 28
- 96% full
- Read 58 minutes ago, and the registrar publishes once an hour, so this is current.
- Waitlist
- No waitlist
- Seat risk
- high risk
From the registrar new students only until 15 September
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.
Held for entering students enrolling through orientation until 15 September. If that is you, the seats are yours now; if not, the class opens to you that morning.
When it meets
Meets: F 2:00pm-2:50pm
Lecture: MWF 1:00pm-1:50pm
Physics and Astronomy Building 2748
Predicted GPA
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.
Enrollment over time
A dot is a reading where something moved: the seat count, the status, or the waitlist. The last one is the most recent sweep, moved or not. The line holds flat between dots because that is what the readings say: it did not drift, it held and then jumped. The ticks along the bottom are the hours Dibs recorded reading this section, which is how a flat run says "checked, unchanged" rather than "nobody looked". It only keeps those from 25 August, so the ruler is shorter than the line for now. Both start when Dibs did rather than reaching back before it existed.
Same seat count, but the status went closed to open and the seat count moved and came back over 12 days
6 times reopenedShow the readings
| Recorded | Enrolled | Capacity | Status | Waitlist |
|---|---|---|---|---|
| 29 Aug 10:42 | 27 | 28 | open | - |
| 27 Aug 17:40 | 27 | 28 | open | - |
| 21 Aug 01:55 | 28 | 28 | closed | - |
| 20 Aug 23:55 | 27 | 28 | open | - |
| 20 Aug 21:55 | 28 | 28 | closed | - |
| 20 Aug 20:55 | 27 | 28 | open | - |
| 20 Aug 17:55 | 28 | 28 | closed | - |
| 19 Aug 17:55 | 27 | 28 | open | - |
| 19 Aug 15:55 | 27 | 27 | closed | - |
| 19 Aug 14:55 | 27 | 28 | open | - |
| 19 Aug 13:55 | 27 | 27 | closed | - |
| 19 Aug 11:55 | 27 | 28 | open | - |
| 17 Aug 16:42 | 27 | 27 | closed | - |
How big this course usually runs
Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.
- 6522S
- 3222F
- 4423F
- 6724F
- 8325S
Peak 83 · most recent 25S at 83