Editing Superluminal motion (section)

{{Short description|Apparent faster-than-light motion of distant astronomical objects}}
[[Image:Superluminalmotion.gif|thumb|right|300px|Superluminal motion]]
{{Original research|date=August 2023}}

In [[astronomy]], '''superluminal motion''' is the apparently [[faster-than-light]] motion seen in some [[radio galaxy|radio galaxies]], [[BL Lac object]]s, [[quasar]]s, [[blazars]] and recently also in some galactic sources called [[microquasar]]s. Bursts of energy moving out along the [[relativistic jet]]s emitted from these objects can have a [[proper motion]] that appears greater than the [[speed of light]]. All of these sources are thought to contain a [[black hole]], responsible for the ejection of mass at high velocities. [[Light echo]]es can also produce apparent superluminal motion.<ref>{{cite journal |last=Bond |first=H. E. |display-authors=etal |year=2003 |title=An energetic stellar outburst accompanied by circumstellar light echoes |journal=[[Nature (journal)|Nature]] |volume=422 |issue=6930 |pages=405–408 |arxiv=astro-ph/0303513 |bibcode=2003Natur.422..405B |doi=10.1038/nature01508 |pmid=12660776 |s2cid=90973}}</ref>