radiorabbitring (jewelry)roperosesrugs
a space word for R could be Rhea the moon of saturn.
telescope (Hubble)
Earth!
Words that start with R and end with R:racerradarradiatorrafterrancherrancorratherrazorreaderreaperreappearrearreceiverrecorderrecoverregisterregularregulatorreindeerrelieverremainderrememberreminderremoverrenterreoccurrepairreporterresistorresponderretailerretainerretrieverrevolverriderrigorringerriserriverroarrobberrockerrollerrooferroosterrosterrubberrulerrumorrunner
· Rovers (US exploration of Mars)
radiorabbitring (jewelry)roperosesrugs
a space word for R could be Rhea the moon of saturn.
telescope (Hubble)
· rabbit · rake · receipt · rifle · ring · rock · rope · rose
Objects in Space was created on 2002-12-13.
Because they are closer to the objects.
Is your question "what do you weigh different objects on in space...", or "why would you attempt to weigh an object in space"...?
Space figures
There are various objects that can be responsible for radio emissions in space. These objects are referred to as astronomical radio sources.
Volume of an object is a measure of the space occupied by objects.
In my opinion, the space word beginning with "a" may be astronaut, or astronomy. When it comes easy, it may be wrong. But hope I am right.