Is it even possible for a planet to be formed without gravitational energy?

Clumps of matter collapse together under their own gravity - there is no requirement for them to be orbiting something for this to happen.

Also bear in mind that some models show it is possible for planets to be ejected from planetary systems during the chaotic formation phase, or by the interaction of another large object with the system.

They're rogue planets that, for one reason or another, have been flung from their home systems but they would have started out in a solar system, it's impossible for one to form otherwise.

Gravitational forces come into play in two ways.

To pull material together in the process we call acretion. The more material, the bigger the body and the more gravity it exerts.

A massive solar body .... star .... needs to ignite to provide the base material for planetary formation.

Planets with no gravity ? Not possible at all. Even a smallest small particles (with mass of course) holds gravitational force.

Your question is irreparably incorrect in presuming information we've not (yet) ordinary are ordinary. So it magically is heat, even however nowhere close to a celeb. properly, particular. What i do no longer understand is how each and each individual who invokes magic in his question can then ask for "trustworthy & medical solutions". Hypocrite. while you're no longer clean approximately what Earth would be like with out the solar's insolation, seek for nuclear wintry climate. Your question set up is ridiculous. You curiously are unaware that we don't understand how existence on earth began. Nor can we also have a available and particular hypothesis. Oh, we've many hypotheses, yet they're all particularly imprecise and circulate away out many greater steps than they contain. If a number of of of them are mind-blowing, they're basically small fragments of the actually technique; far too incomplete to be categorized a theory of abiogenesis. i'm *no longer* confident (even however i'm no professional) that the human beings who smoke hydrothermal vents would desire to be the potential source for abiogenesis. that's not likely that the chemical reactions top-rated to self-replication are "in all probability". in the event that they're particularly uncommon, then they'll require an a lot larger crucible than the aspects around vents produces. I additionally doubt that the existence going on around vents may well be thoroughly self-sustained, with is not any in-circulate of nutrition from something of the biosphere. One final component: we've of course ordinary that Earth has been surprisingly changed via its biology. what's far less clean is what it replaced into like (and could be like today) with out that biology. one component is clean, its temperature and environment would be in assessment to something we on earth today are acquainted with.

No, not possible. But once formed, they can even be flung out of their galaxy as "hypervelocity planet": a phenomenon often caused by Galactic collisions. No need to orbit anything then.