What's with these bright spots on Mars?
. He points out that what scientists know of the polar ice’s composition is limited to the same kind of measurements—radio—as the subsurface measurements. He hopes in coming years scientists will be able to more precisely determine the composition of the poles to answer these questions.
It’s also possible that the Martian bedrock is covered in layers of frozen carbon dioxide plus frozen water. This would alter the way they reflect light, possibly causing a bright spot, sort of like how “when you have your glasses that are coated with a very thin film, you change the reflectivity properties of it,” Grima says.
She’s also critical of the idea that basalt can generate such strong radar signals and thinks, based on her team’s previous work. Basalt rock “would explain only 25 percent of the strong reflections detected by MARSIS,” she says. Salty liquid water could explain all the bright spots, in her view.
Ireland Latest News, Ireland Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Bacteria survive extremes that may have existed in ancient Mars lakesBacteria have been found surviving in the extreme conditions of a crater lake in an active volcano in Costa Rica, which may mimic conditions of ancient lakes on Mars
Read more »
Alaska House considering action against Rep. David Eastman, ‘life member’ of group linked to Jan. 6 U.S. Capitol riotMembers of the Alaska House's coalition majority are considering taking action against Wasilla state Rep. David Eastman, a 'life member' of the Oath Keepers group linked to the Jan. 6 U.S. Capitol riot:
Read more »
Paris hospitals chief sparks debate on whether unvaccinated patients should pay for treatmentThe head of the Paris hospitals system has set off a fierce debate by questioning whether people who refuse to be vaccinated against COVID-19 should continue to have their treatment covered by public health insurance.
Read more »