It is implausible in the extreme that the
Schiaparelli
would have sufficient extra fuel to perform a plane change
maneuver from its orbital inclination of nearly twenty degrees to
the near-equatorial orbit of Phobos, then raise its orbit to
rendezvous with the moon. The fuel on board the
Schiaparelli
would have been launched from Earth, and would be just sufficient
to return to Earth without any costly maneuvers in Mars orbit. The
cost of launching such a large additional amount of fuel, not to
mention the larger tanks to hold it, would be prohibitive.
(We're already in a spoiler block, but be warned that the
following paragraph is a hideous spoiler of the entire plot.)
Cory's ethical dilemma, on which the story turns, is whether to
reveal the existence of the advanced technology alien base on
Phobos to a humanity which he believes unprepared for such power
and likely to use it to destroy themselves. OK, fine, that's
his call (and that of Hedy, who also knows enough to give away
the secret). But in the conclusion, we're told that, fifty
years after the rescue mission, there's a thriving colony on
Mars with eight thousand people in two subsurface towns, raising
families. How probable is it, even if not a word was said about
what happened on Phobos, that this thriving colony and the
Earth-based space program which supported it would not, over
half a century, send another exploration mission to Phobos, which
is scientifically interesting in its own right? And given what
Cory found there, any mission which investigated Phobos would
have found what he did.
Finally, in the Afterword, the author defends his social justice
narrative as follows.
At times, I've been criticized for “jumping on the
[liberal] bandwagon” on topics like gay rights and
Black Lives Matter across a number of books, but, honestly,
it's the 21st century—the cruelty that still
dominates how we humans deal with each other is petty and
myopic. Any contact with an intelligent extraterrestrial
species will expose not only a vast technological gulf, but
a moral one as well.
Well, maybe, but isn't it equally likely that when they arrive
in their atomic space cars and imbibe what passes for culture
and morality among the intellectual élite of the global
Davos party and how obsessed these talking apes seem to be about
who is canoodling whom with what, that after they stop laughing
they may decide that we are made of atoms which they can use for
something else.