Galactic Center By NASA's Marshall Space Flight Center

Did Betelgeuse Swallow a Binary Partner ?

The star hit the news back in late 2019 when it suddenly dimmed in an event known as the great dimming, and since there's been a lot of papers and theories to what really happened.

At the time, there was talk of supernova from a minority, while most astronomers reserved judgement on this, which turned out to be the right call, although even they had to admit bafflement at why this star suddenly become so dim.

Since, then the prevailing and mostly accepted theory is that the star ejected a huge amount of material which included carbon and thus concealed parts of the star, causing the dimming.

A new paper from Department of Physics and Astronomy at Louisiana State University has looked at another idea, that at some point in the recent past the star had consumed a binary partner.

While the study can only make suggestions at this point, some of the observed facts about Betelgeuse certainly fit the bill. The star spins very quickly for an old supersized red giant, even faster than our own sun, and the team believe a past consumption may have transferred energy to the star, accounting for this spin rate.

The next thing was that the super giant star didn't just dim, it rebounded and actually brightened considerably too. These events of material coming to the surface and briefly causing a brightening effect are predicted through models of this occurrence.

The star is not likely to go supernova anytime soon, but I would put bets on the likelihood of the star surprising us once again in the coming decades.

Astronomical photographs, Harvard College Observatory, Cambridge, 1890-1920

Bubble Nebula and the Star Cluster

Comet Leonard

Shadows of Saturn

The Rosetta Nebula and NGC 2244

At the heart of the Rosetta nebula is an open cluster of stars, which is NGC 2244. The entire structure sits at the end of a giant molecular cloud, and you can easily spot the tell tale columns and protostars at the head showing active star formation on-going.

The bottom image is from Chandra, which gives the purple/pink colours for X-Ray sources, used particularly in spotting black hole accretion disks, pulsars and supernova remnants, we can see it's a lively place !

The entire structure is in the constellation of Monoceros at around 5,200 light years from Earth.

A solar eclipse seen from space.

[...] while compartmentalization and replication are important, they are aspects of what life is and does, but they do not address the why of life. The why of life is metabolism. By completing the circuit of life, biology harnesses energy from its environment. Technically speaking, this means that biology actually helps the universe cool faster; it increases the entropy of the universe. This is why the universe needs life.

Alien Oceans by Kevin Peter Hand

Andromeda over the Swiss Alps Image Credit: Dzmitry Kananovich