UFOs explained
I have this on the best authority.
There are countless worlds in our galaxy on which intelligent life has evolved. Most of them are many millennia ahead of us and have overcome the problems of interstellar travel. They are joined in a vast union of civilizations who intermingle in peace and prosperity for all.
Occasionally, a planet produces a somewhat intelligent life form on which evolution goes awry and produces a dangerous, self-destructive species. We are one of those planets.
The UFOs are here to make sure we don't escape and spread whatever disease infects our existence. They mean us no harm. They are simply protecting the sane civilizations with whom we share this galaxy.
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the original version (1951).
Rent on any number of streams for $4.
But then, the aliens decide to break silence and send down a magic vaccine.
Violence, chaos and rumors of magic potions immediately ensue.......
interact benignly, or wipe us from the face of this orb. 
Believe the Jan 6th Committee is responsible for that.
I go into Jimmy John's yesterday. I order a turkey sub. The kid looks at me and with a straight face says "Currently, we are out of turkey. Because there is a turkey shortage." I think by that he means that his manager forgot to order turkey. 
There's no shortage of turkeys there.
We deserve it.
1945 was the warning to them.
the vastness of space in my Voyager l and Voyager ll references and how they've barely reached interstellar space in 40-some years of travel...half our lifetime.
And they are still nowhere close to Andromeda, our nearest large, spiral galaxy neighbor, not counting the the small dwarf galaxies of course, one being relatively closer at only 
236,000,000,000,000,000 km (25,000 light years) from the Sun.
I hope I didn't seem contradictory or argumentative, because I'm intending to show agreement.
Here's something you may already know: Andromeda and Milky Way are on a collision course, and will intersect in about 5 billion years. Brace yourself. Milky Way has about 300 billion stars, Andromeda about a trillion. A while back I asked My Son The Astronomer, when that happens, just how many stars will crash into each other? "Well," he said, "we don't know for sure, but probably no more than ten." That says volumes about just how vast interstellar distances are. Of course, many more will interact gravitationally, but actually crashing into each other? No more than ten.
You seem to know at least as much astronomy as I do.
I do write science fiction, I've had a handful of stories published, even recently edited an anthology. Alas, I do not seem to have what it takes to write an entire novel. Several years back I attended the Taos Toolbox, a truly wonderful workshop run by the fabulous Walter Jon Williams, co-taught by Nancy Kress. The portions of the novel I was then working on had every single attendee, plus Walter and Nancy say, "This is not a novel. Maybe a novella, but not a novel." Alas, I don't seem to be adept at putting in the complexity that a novel needs to be a novel.
I'm at my best at flash fiction length. I think my longest published story is 3,000 words. Mostly I'm 500 words or less. Sadly, the market for flash fiction is limited.
As for the science in my dinosaur novel, meaning the time travel thing, it can be finessed. I can have a narrator that only knows time travel has been invented. But there are so many moving parts, that I get lost.
Plus, I think about a lot of world-building kinds of things, such as: what kind of pets would they have had? We humans mostly have cats or dogs (I'll simply ignore all the other kinds of pets for this discussion) which are four-legged furry mammals, and among the things we love about them is that four-legged furriness. So if you're a kind of lizard, what sort of pet would you have?
Also, did they have professional sports? That's a huge part of our culture, even if you personally don't give a flying fuck about any sport. How about schooling for the young? It goes on and on, and I get stuck sometimes thinking about these things.
Oh, and here's something else. In our present, all humans are the same species but we have a number of vastly different cultures, not to mention different languages, food, religions. It's easier to present my dinosaurs as all being the same culture and language, but . . . . It's part of the problem of s-f presenting alien species, or even as is part of this thread, aliens who might be visiting this planet. On this planet we have more than one culture, more than one language. Why assume it would be any different with aliens?
I am an avid reader of science fiction. I love time travel stories, even though time travel is probably impossible. I love stories in which humans have populated the galaxy with faster than light travel, even though that's probably impossible. I make a strong distinction between fiction and reality.
Thank you for your kind words. 
Go home! Nothing to see here!
If so, watch out for those Toronadoes! 
Not a lot of 1970 Toronados left on the road. Now tornados I give a wide berth to. Yes,Kansas
Do you stop and cry or feel sad every time you step on an ant? No, you don't. In fact, if you go outside and do "things" you probably kill thousands of creatures every day. Do you mourn them? Why? Because they are lesser life forms (in our minds). Aliens will feel the same about us....if we are not edible. Then it all changes.
Have they written a book? Inquiring minds want to know.
all purely speculative IMO.
because Mars needs women
