Close, But No FRB

There was a report about a month ago that a Fast Radio Burst (FRB) produced a repeating signal.  This is big news because we really don’t know what causes FRBs, and once they have ended it can be difficult to trace their source.  But a repeating signal means we can pinpoint their origin and potentially figure out their root cause.  It’s no wonder the astronomical community was excited…and skeptical. Most of the FRBs that have been discovered were in archival data – data from past surveys that were given a closer look.  Only a few have been seen in real-time, so when...

Planetary Nebulae

Some of the most gorgeous, ghostly, and variable objects in the universe are planetary nebulae.  They are all formed in a similar process, as a low-mass star (like our Sun) sheds it’s outer layers of gas and dust, heating them to a glow as they disperse over hundreds of millions of years.  A few Billion years from now, the Sun will undergo the same major state change.  When this happens, perhaps other species in the far future will gaze upon it and marvel at its beauty. One of the difficulties in studying a planetary nebula is measuring it’s distance from...