Zhihu Daily
Latest recorded position: #27 on Jul 27, 2026, 8:29 PM CST.
There are not enough retained observations to calculate a rank change.
Voyager 1 Has Reached the Edge of the Solar System. How Can It Still Communicate with Earth?
旅行者1号已经飞到了太阳系边缘，它为何还能与地球通讯？
ThreadEast first recorded "Voyager 1 Has Reached the Edge of the Solar System. How Can It Still Communicate with Earth?" on Jul 21, 2026, 8:19 AM CST. It has been observed on Zhihu Daily, with 6 days 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
#27Last observed rank
Original source