Astronomers Puzzled By a Planet That Shouldn't Exist
Astronomers have discovered a mysterious planet that simply shouldn’t exist. The alien world, dubbed NGTS-4b, is a “hot Jupiter” – a gas giant planet that orbits extremely close to its host star. But what makes NGTS-4b so perplexing is its size; it’s the smallest hot Jupiter ever discovered, about the size of Jupiter but with a mass only one-third that of the Solar System’s largest planet. This has left astronomers scratching their heads, as the planet’s mass should be much larger than it is.
source: Phys.org