At Last, Scientists Have Found The Galaxy's Missing Exoplanets: Cold Gas Giants

In the early 1990s, scientists began detecting the first planets orbiting stars other than the Sun: exoplanets. The easiest ones to see had the largest masses and the shortest orbits, as those are the planets with the greatest observable effects on their parent stars. The second types of planets were at the other extreme, massive enough to emit their own infrared light but so distant from their star that they could be independently resolved by a powerful enough telescope.
Read more: https://www.forbes.com/sites/startswithabang/2019/04/23/at-last-scientists-have-found-the-galaxys-missing-exoplanets-cold-gas-giants/#2ed4be9647a5?source=Snapzu