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Epic black hole 74 EP

Phoenix A

RA 356.1829° · Dec -42.7201° · blackhole

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Score breakdown

· 5 badges
74 pts · Epic
Epic 78 pts → Anomaly
  • Monster: over a billion Suns +28
  • Black hole +26
  • Has a proper name +8
  • Outside our galaxy entirely +6
  • Actively feeding +6
Total score 74

4 more points to reach Anomaly.

Badges

  • Black hole · +26
  • Outside our galaxy entirely · +6
  • Has a proper name · +8
  • Monster: over a billion Suns · +28
  • Actively feeding · +6

Trivia

What makes it special

  • It is feeding. Gas spiralling in is squeezed and heated to millions of degrees before it falls, so the disc around it blazes brighter than anything else in the neighbourhood.

Hard to believe

  • Ultramassive. In the heaviest class of black hole known — a billion Suns or more in a single object.
  • Mass. It weighs about 100 billion times as much as the Sun, all of it crushed into a region with no surface and no size at all.

Handle with care

  • A gentle crossing. It is so vast that the stretching is mild at the horizon: you would cross the point of no return entirely intact, feeling nothing, with no way of knowing you had done it.
  • No way back. Cross the event horizon and every path you could possibly take leads inwards. It is not that you cannot go fast enough — it is that 'out' has stopped being a direction.

What it actually is

  • Where it lives. It sits at the very heart of Phoenix Cluster BCG (SPT-CL J2344-4243).
  • What it is. A supermassive black hole. Practically every large galaxy has one, and how they grew so enormous so early in cosmic history is still an open question.
  • Stretched by the universe. Its light is redshifted by z = 0.6. Space itself has stretched about 1.6 times wider since that light set out — the light did not just travel, it was carried.

Properties

accreting
yes
bh class
supermassive
constellation
Phe
dist ly
5700000000
first imaged
no
gw detection
no
host galaxy
Phoenix Cluster BCG (SPT-CL J2344-4243)
is sgr a
no
mass solar
100000000000
name
Phoenix A
named
yes
redshift
0.596
schwarzschild km
295400773649.11

About Phoenix A

Phoenix A is an epic black hole. It lies about 5.70×10^9 light-years from Earth and sits in the constellation Phe.

Gas spiralling in is squeezed and heated to millions of degrees before it falls, so the disc around it blazes brighter than anything else in the neighbourhood.

How to see it

Look for Phoenix A in the constellation Phe.

Like any astronomical target, Phoenix A is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why Phoenix A is an epic black hole

Phoenix A scores 74 points on Spacedle's rarity scale, which places it in the epic tier. Another 4 points would lift it into a rarer tier.

That score comes from 5 science badges — Black hole, Outside our galaxy entirely, Has a proper name, Monster: over a billion Suns and Actively feeding — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.