Hobus crisis

The Hobus crisis was a series of events in 2387, beginning with the explosion and supernova of the Hobus star, and ending with the Battle of Capella IV.

Order of events
In 2387, the Hobus star exploded in a supernova which threatened the galaxy. The first indications of the disaster were observed on Stardate 64333.4 by the crew of the Romulan Mining Guild ship Narada, who were mining the first planet in the Hobus system for the rare mineral decalithium. Wild fluctuations in Hobus’ radiation output forced the Narada to abandon a mining operation and evacuate the area at warp. The star erupted, destroying the planet. Ambassador Spock warned the Romulan senate that the imminent supernova would be “unlike any the galaxy has ever seen” and that the star had converted the planet’s mass into energy, increasing its own power. 27 hours after stardate 64444.5, the Hobus star exploded, the effects propagating through subspace at multiwarp speeds, destroying the planets Romulus and Remus. On Stardate 64471.6 ), Ambassador Spock, using a prototype ship equipped with red matter, created a black hole, absorbing the exploding star.

The supernova left behind the parsecs-deep, amber-hued Hobus Nebula. At the center of the nebula, the Hobus stellar remnant, known as the Hobus Cinder, is still active and can be seen pulsing through the nebula gasses (STO novel: The Needs of the Many)

In 2388, Admiral Kathryn Janeway flew the first survey mission of the Hobus Nebula aboard a variant of the Delta Flyer with a crew of volunteers. It was discovered that the supernovas neutrino output was somehow being shunted into subspace, and that the Hobus Cinder continues to output intense streams of X-rays, gamma rays, delta rays, epsilon radiation, Berthold rays and tetryon particles.