Zhihu Hot List
Latest recorded position: #25 on Oct 6, 2026, 8:01 PM CST.
Across 1 retained daily record, the best recorded rank was #25. From the first retained rank (#25) to the last (#25), this listing held the same rank.
Why Does Earth Look Blue from Space While the Moon Appears Gray?
为什么在太空中看地球是蓝色的，而月球却呈现灰色？
ThreadEast first recorded "Why Does Earth Look Blue from Space While the Moon Appears Gray?" on Oct 6, 2026, 8:01 PM CST. It has been observed on Zhihu Hot List, with less than one hour between the first and latest recorded appearances.
What the trend data tells us
The English title describes the topic of the source listing. Its appearance in a ranking measures attention within that platform; the ranking alone does not explain the cause of a spike or verify the underlying claim.
This stable URL remains available after a topic leaves a live ranking. Observation span is elapsed time between sightings, not continuous time on a chart. Platforms use different ranking and heat systems; their metrics are not added together.
Original evidence
Source listings
#25Source metric: 99 万热度
Original source Daily ranking timeline
Up to 180 recent daily records from retained observations and preserved archives. The best rank and last rank can differ within a day. Times use China Standard Time (UTC+8).
| Day | Platform | Best rank | Last rank | Observations |
|---|---|---|---|---|
| 2026-10-06 | Zhihu Hot List | #25 | #25 | 1 |