Maybe not, but that falls into the category of implausible to me. Maybe there really are wormholes and teleportation and shit... but nah. I guess anything is possible, except the impossible.

One thought that intrigues me though, which I admittedly got from the Farscape scifi TV series, is that would it be plausible to be a lifeform that doesn't need e.g. atmosphere, but e.g. energy from the suns would be enough to keep them alive? A lifeform that can travel in space, not bound to one planet with its own atmosphere.

Okay, then why don't they send the whale probe?

Whales and NUUKLEAR WESSELS should be good enough a reason for any space traveller to visit this planet in this time!

Yeah.
V was kind of great, at least the original miniseries in which the reptilians came in human disguise just to take over the planet.

But then in The Final Battle the plot started to go south, or which ever way in space means bad.
That human/reptilian hybrid kid, OK, I guess that's a nod to the UFO lore, but when they had that massive section in their flying saucer where they stored living humans in some jelly to be flown back to their home planet... as food?!

From any rational point of view the logistics of that would never make any sense. Of course it was for horror effect, we get that, you can only rip those humans faces that many times, you need to think something else. But they should have run the script through some science advisor at least once before shooting.

One of the reasons why Star Trek, Babylon 5 and some other shows are good, is that they have at least made some attempt to keep some scientific reality in them. Maybe not that much, but enough at least.

Well, the Star Trek explanation works actually very well.
They study civilizations which are about to become space travelling species in the near future, but don't make first contact, because that species must take the first step towards it.

That's kind of how it was done in 2001: A Space Odyssey too. The monolith on the moon couldn't be found accidentally, finding it required spaceflight capability.

The question is of course, would any real aliens be bothered to play such games with technological advancement.
They could just come and take whatever they want, or make the first contact happen on whatever terms they wanted to dictate.
Or make us mine gold for no real reason, like Anunnaki did, back in the day.

Virus? Bacteria? And such?
Sure, it's possible, at least if you count those as lifeforms. Panspermia and all that stuff.

Now if you meant something that can think and actively choose where to go in space, that would be much harder. Our knowledge about physics can be incomplete, but some basic concepts are probably true.

So how would such a lifeform ever leave their home planet, other than debris from asteroid collision and other similar events? Once in space, how would that lifeform change its course?
Some very big practical issues.

But as far as such life existing overall goes, sure it's possible. In theory at least.

I'm totally with the current novel i'm reading atm ( or mass effect for that matters ) There is this large group of intelligent beings, not going into the whole machine spirit and all but anyway, life tends to fuck up big time so after this especially huge war that almost destroyed a stellar grouping .. uhm milky way it was decided to root out any advanced civilization just to keep everything intact until finally the answer is found ... or better the question to the answer if completely sorted out... ya know

so to summarize

we suck
we agree
we kill, but not to the fullest extent
we live one!

There's also the Trek explanation for observing even far more primitive civilisations, as beautifuly stated by Picard in Who Watches the Watchers - "We were once as you are now. To study you is to understand ourselves."

There are lifeforms on earth, a lot bigger than a virus/bacteria that survive (thrive) in very "unliveable" environments. All of our knowledge about life and its evolution is based on what happens/happened on earth. Non carbon-based lifeforms (for example); can we actually disprove the possibility? (let alone prove it)
Let's say aliens have visited our planet - maybe they're not organic at all, maybe they're androids. Their flight took a thousand years, but maybe that's irrelevant for them? So many potential possibilities, even within the current knowledge of physics.

Great show indeed. And some would call it a documentary.

My personal solution to the Fermi Paradox is that the distances involved and the pure physics limitations make things like colonization of hundreds, throusands of star systems is something rare or extremely slow even for supposed superadvanced alien civilizations.

I mean. It would be so limited that the decadence of that civilization would be a reality before a wide colonization of the full galaxy were a reality.

Other solution could be that we haven't detected other civilizations because we haven't detected them yet.

A lot of interesting "connections" through history if you overlay the theory that reptilians are (and have been) here.

Brotherhood of the Snake...

V and V: the Final Battle are great tv mini-series. A bit of 80's cheese with some important messages (watch alongside They Live).

This. I didn't say anything myself, because I'm hesitant to engage this topic seriously (with all the conspiracy nonsense already floating around and bound to increase), but my thoughts on the matter are exactly this - alien life may be so alien that all our speculation about how or why they would/wouldn't do this or that is just plain silly. Because all we're really doing is talking about them like they're humans in costumes, flying starships from pulp magazine covers.

theyre probably already here...maybe just hiding in plain sight.

im sure most of us will be cool with them, there will be an initial shock, but it will most likely wear out.
governments however, that's a different story.

Mostly in post offices.

There is much that isn't explained, intertwined with aliens, religion, god, spirits/ghosts, crop circles, and oddities that happen in the universe.

So yes I believe they are out there and exist. They are also probably human-ish. It's suggested we are an experiment modified from their DNA to be compatible with the life on this planet, though what they breathe or whatnot i could only guess at.

Any thoughts on popular alien types and their theorized motivations?

What I find endlessly interesting in alleged interactions with aliens -- as well as "interactions" with similar entities while using DMT -- is that the "aliens" often appear devious and in fact lie. This seems a very important aspect -- of both "them" and / or us. Are they innocent or benevolent visitors... actually here for malicious intent... or projections of our guilt and / or feelings of worthlessness?

Yes, I believe there is alien life out there. Barriers to be able to visit intelligent aliens are high.
But extraterrestrial aliens having visited earth? No. I find it interesting that the majority of UFO sightings are in America.