The phrase "a planet with a" is correct and usable in written English.
It can be used when describing a specific characteristic or feature of a planet.
Example: "Scientists discovered a planet with a unique atmosphere that could support life."
Alternatives: "a planet that has a" or "a planet featuring a".
Some of the earliest missions to Mars revealed a planet with a watery past.
It may be made by digital loom; it could also be an advanced Lurex from a planet with a larger sun, made by intelligent spiders.
It begins on a planet, with a small ship to repair, a spacesuit to be maintained and a mining tool to excavate materials.
This is not the history of our planet Earth, but an alternative mythological history of a planet with a passing resemblance to our own.
It was startlingly light to the touch, and felt as if I were running my fingers through beach sand on a planet with a lesser gravitational pull than Earth's.
The weakness is that there's always an escape route – why stay in the apocalyptic wasteland when you could be whisked away to a planet with a beach and cocktails?
Granted, it started out pretty bizarre: It's the 21st century, we live on a planet with an exploding population, rampant disease and even more rampant poverty, and yet we're arguing about contraceptives.
Then details are given on the feasibility of detecting a planet with an instrument concept designed specifically for this purpose, a space-based, rotating rotationally shearing interferometer.
A planet with an orbit measured in days travels an extremely short distance around the star, which limits the amount of material it can scoop up as it forms.
Jonas Quinn is introduced in the penultimate season 5 episode "Meridian" as a scientist of the human nation of Kelowna on Langara, a planet with an industrial level comparable to Earth of the 1940s, and that is also locked in a cold war with two rival states.
A planet with better designers".
