← Back to radar
Observation record / Hacker News
Triplet of 'ghostly' galaxies hints at what dark matter is and isn't
First seen 10/20, 12:50 · Last observed 10/21, 05:14 · Source data is current
Read the original source ↗Title-based outlineTriplet of 'ghostly' galaxies hints at what dark matter is and isn't
Why it mattersA discussion on this source’s current list. Verify details in the original; rank does not establish reliability.
This content was published earlier. Fetch success does not imply freshness.
30 minutesRank movement—
Building history
1 hourRank movement—
Building history
24 hoursRank movement—
Building history
Source rank history
35 observationsBuilding history; no inferred heat score.
Official public API · linked titles only· Author gumby
View original observation times and ranks
| Observation time (Beijing) | Source position |
|---|---|
| 10/21, 05:14 | 30 |
| 10/21, 05:04 | 29 |
| 10/21, 04:54 | 28 |
| 10/21, 04:44 | 24 |
| 10/21, 04:34 | 24 |
| 10/21, 04:24 | 26 |
| 10/21, 04:14 | 26 |
| 10/21, 04:04 | 26 |
| 10/21, 03:54 | 27 |
| 10/21, 03:44 | 24 |
| 10/21, 03:34 | 20 |
| 10/21, 03:24 | 19 |
| 10/21, 03:14 | 16 |
| 10/21, 03:04 | 16 |
| 10/21, 02:54 | 13 |
| 10/21, 02:44 | 12 |
| 10/21, 02:34 | 12 |
| 10/21, 02:24 | 11 |
| 10/21, 02:14 | 7 |
| 10/21, 02:03 | 9 |
| 10/21, 01:53 | 9 |
| 10/21, 01:43 | 8 |
| 10/21, 01:33 | 7 |
| 10/21, 01:23 | 8 |
| 10/21, 01:13 | 7 |
| 10/21, 01:03 | 9 |
| 10/21, 00:53 | 7 |
| 10/21, 00:43 | 7 |
| 10/21, 00:33 | 7 |
| 10/21, 00:23 | 6 |
| 10/21, 00:13 | 6 |
| 10/21, 00:03 | 7 |
| 10/20, 13:10 | 27 |
| 10/20, 13:00 | 28 |
| 10/20, 12:50 | 27 |
Daily aggregate history
| 日期 | Best daily position | Last daily position | Observations |
|---|---|---|---|
| 2026-10-20 | 27 | 27 | 3 |
| 2026-10-21 | 6 | 30 | 32 |