Mindey, 
Distributed Cell-Phone Based Night Surveys
Utilize billions of phone cameras, while charging battery at nights, to watch the sky for phenomena.
Many of us geeks and nerds know that long-exposure night photography works pretty well with modern phones.
So, just creating an app, that monitors the sky collecting light while charging the phone at night, that activates automatically, when plugged in to charge at night (e.g., when sensors say it's dark, battery is charging, and no significant accelerometer motion is detected, and Wi-Fi connection is used), could be used to record, compress and send astronomic data for a decentralized research of the skies. It could be run intensively, utilizing its compute and network, because at those times it would be plugged in to the grid and Wi-Fi.
The users could set up custom data servers to send the data to, and this way, collectively run night surveys. Who knows what they could discover? Undocumented satellites, UFOs, NEOs, and maybe something else that we didn't know of.
范围还不够大，需要扩大到其他地方，可能功能可以扩展到不限于流星监视
さて、ほとんどの監視は今、地上の人々をじっと見つめています。夜間は電話で空を監視することをお勧めします。
嗯，现在多数监控是盯着地面上的人，我们需要转变一下思考方式。让手机在夜里监视天空是个好主意。
[一時的]それで、監視カメラは空のときに空を指す必要がありますか？ :)
[transiency] so, the surveillance cameras should point to skies, when idle? :)
はい、より効率的に使用できます
对啊，这样可以更高效率地利用它们
いいえ、いいえ、監視カメラは常に地面を監視する必要があるかもしれません。しかし、携帯電話は昼と夜の間動作しません。さらに、世界中の24時間で人や電話の睡眠は異なるため、睡眠中に空を監視する場合、全天球全体をカバーする24時間連続した監視ネットワークがあり、これは非常に強力です！
不不不，监控摄像机们可能需要一直监控地面。但是手机们确实是白天工作夜晚不工作的。而且全球24个小时人们/手机睡觉的时间不一样，那么如果都是睡觉的时候监控天空的话，就有了覆盖全天球的24小时不间断的监视网络，太强大了！