[robotfelix]

> to deep space destinations, such as the Moon

I feel woefully underqualified to call out NASA's PR team, but I don't _think_ the Moon qualifies for most definitions of "deep space".

Exciting news all the same, and I can only assume they meant to suggest that RDRE propulsion is useful for destinations that are nearer too!

[mgsouth]

The U.S. government defines deep space as anything beyond low-earth orbit. [1] Others vary. [2] The U.S. "Deep Space Network" was created because communications with low-earth orbit and beyond-LEO had very different requirements [3].

[1] https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim...

[2] https://en.wikipedia.org/wiki/Outer_space#Regions_near_the_E...

[3] https://en.wikipedia.org/wiki/NASA_Deep_Space_Network#Deep_s...

[akiselev]

From the NASA Deep Space Communications Educator guide [1]:

> Deep space begins at approximately 42,000 km (26,098 mi) from Earth

[1] https://www.nasa.gov/sites/default/files/atoms/files/ps-0343...

[abudabi123]

Deep space should be the furthest point reached by probes in likeness to deep ocean depth exploration. Voyager I, II and New Horizon probes should redefine the ”distance.“

[daveguy]

I believe they call that interstellar space to distinguish from "deep" space.