Yes, these look like aliens.
They are new sprouts on one of the showy milkweed plants.
I am so happy to see that not only the narrow leafed milkweed plants are sprouting after a dormant period.
This is the very first time that the showy milkweed plants are reproducing.
In the past I've had to pull out milkweed plants that simply shriveled up and perished during the winter.
It's interested how these milkweed plants sprout from the mother plant.
Some grow directly out of the cut off base of the plant.
Some, like this showy milkweed, spread through rhizomes deep in the soil.
Look carefully and you will see little milkweed sprouts growing directly out of the base of the cut plant.