Chinese Station (Tiangong 2) orbit change

[cyberKerb]

News Link (AU)

I read this and ending up thinking how it worked in KSP and if lowering the orbit was a way to speed up and get a better DeltaV effect being closer to Earth. 

[YNM]

And larger drag.

Usually to help with deorbiting.

[Scotius]

Then why boost the station back to higher orbit? Unless it actually was a test of hardware capabilities.

[kerbiloid]

... and how did they launch it again from the oceanic bottom?

Quote

Earlier, he had commented the lower orbit may mean Tiangong-2 was “probably about to be deorbited.”

Its sister space station — Tiangong-2 — went out-of-control in 2016, prompting widespread speculation as to whether or not it could rain deadly metal debris down on heavily populated centres. It eventually crashed-down in April this year without incident.