The astronomers suggest that the gullies could be the result of micrometeorite impacts.
Such durable, adaptive robots, astronomers have suggested, could someday be sent into space to explore the galaxy or search for other life.
An astronomer, Schroeder Peterson, suggests they were being visited by God.
Though astronomers have suggested why one chirality might be favored over another, the evidence is not compelling, in Dr. Rich's view.
Now Pluto is facing an identity crisis, with some astronomers suggesting it is not a planet at all.
In fact almost anything some astronomers suggest about a black hole is denied by other astronomers.
Some astronomers suggest that the discrepancies stem from the inability of simple mathematical models to deal with messy details of the real world.
For these reasons, some astronomers suggest they belong in their own category, "ice giants".
In 2002, astronomers suggested using the Very Large Telescope to search for the landing sites.
Decades ago, some astronomers suggested that objects they later called brown dwarfs fit the bill in filling the gap.