Speculations about space aliens isn’t.
The Perseverance Rover, set to launch quite soon seems like a genuine science attempt to determine if there is or ever has been extraterrestrial life (as opposed to speculations about space aliens):
It is to pick out rocks that might show signs of life and store them for transport back to Earth via a future mission:
Most of the rover’s seven sets of scientific instruments work in service of that goal, including zoomable cameras to pick out the best rocks from afar and lasers and spectrometers to identify a rock’s makeup. After the rover lands in February 2021, it’s capable of collecting and storing 20 samples within the first Martian year (about two Earth years). The NASA team plans to collect at least 30 samples over the whole mission, says planetary scientist Katie Stack Morgan of NASA’s Jet Propulsion Laboratory in Pasadena, Calif.
Fortunately, Perseverance is headed to a spot that should be full of collection-worthy rocks. The landing site in Jezero crater, just north of the Martian equator, contains an ancient river delta that looks like it once carried water and silt into a long-lived lake.Lisa Grossman, “NASA’s Perseverance rover will seek signs of past life on Mars” at ScienceNews
It may take a while to find out but maybe we’ll really know something this time.
Alternatively, there is Tales of an invented god