So is there life out there apart from us?
The Virgo Supercluster contains aaround 110 galaies and it has a diameter of aver 100 million light-years.
There are around 2.16 quadrillion planets in the Virgo Supercluster. Since there are around 10 million superclusters in the universe. If you multiply the number of planets by 10 million you get around 21.6 sextillion (21,600,000,000,000,000,000,000,000) planets in the known universe.
If you then take the given average of one planet in five being in the habital zone you have 4.3 sextillion habital planets in the known universe.
It stands to reason that we cannot be the only inhabited planet but the time it would take to get to even the closest habital planet would take thousands of lifetimes.
What kind of life is out there we will probably never know because of these astronominal distances.
The KELT-9 star is only 300 million years old, which is young in star time. It is more than twice as large, and nearly twice as hot, as our sun. Given that the planet's atmosphere is constantly blasted with high levels of ultraviolet radiation, the planet may even be shedding a tail of evaporated planetary material.