[BLOG] Five Bad Astronomy links (@badastronomer)

• Bad Astronomy notes the remarkable burst of starbirth at the core of our galaxy one billion years ago, here.
• Bad Astronomy shares a flyby video of the Mars moon of Phobos.
• Bad Astronomer reports on a strange storm around the south pole of Jupiter, here.
• Bad Astronomer reports on an outburst following a debris impact seen by TESS on comet 47P/Wirtanen.
• Bad Astronomer notes the continuing debate over the dynamic nature of the spiral arms of galaxies.