Which source of impact threat is generally feared more by those operating spacecraft in orbit?
Answer
Space junk/Orbital debris
Reports suggest that spacecraft operating in orbit tend to fear space junk (orbital debris) more than natural meteorites because debris is unpredictable and often too small to track effectively.

#Videos
Meteor burns up over Earth in amazing footage from space station
The Asteroid That Almost Hit The International Space Station!
Related Questions
What is defined as the streak of light seen when a space rock enters Earth's atmosphere?Which source of impact threat is generally feared more by those operating spacecraft in orbit?At orbital velocities exceeding 17,500 mph, what size particle carries enough kinetic energy to cause significant damage?What is the name of the primary defense system used against typical MMOD threats on the ISS?What maneuver do mission controllers use to adjust the station's trajectory to avoid tracked debris?What is the primary altitude range of the ISS in miles?What is the function of the outer sacrificial layer of a Whipple shield upon impact?If a strike penetrates the ISS pressure hull, what is the immediate protocol for the crew?What acronym is used by designers to categorize the threats of micrometeoroids and orbital debris combined?What is a primary result of the steady erosion caused by countless sub-millimeter impacts over years?