<a href="https://en.wikipedia.org/wiki/Gravitational_redshift" class="extiw" title="w:Gravitational redshift">Gravitational redshift</a>
<a href="//commons.wikimedia.org/wiki/User:KasugaHuang" title="User:KasugaHuang">KasugaHuang</a> (<a href="//commons.wikimedia.org/wiki/User_talk:KasugaHuang" title="User talk:KasugaHuang">talk</a><span style="white-space:nowrap"> <b>·</b></span> <a href="//commons.wikimedia.org/wiki/Special:Contributions/KasugaHuang" title="Special:Contributions/KasugaHuang">contribs</a>)
<span class="int-own-work" lang="en">Own work</span>