No details have been confirmed yet, but NASA is promising a major announcement on Monday at 9:30 a.m. Regina time about a scientific finding that has been made as part of its ongoing exploration of Mars.
Some of the more fervent speculation involves the possibility of the discovery of life, or at least the remains of life, on the Red Planet. But the more far likely scenario is that NASA will announce that it has detected the presence of water which is tied to the observation of dark tendrils on sloped surfaces on the planet during warmer parts of the Martian year.
Geological evidence shows that Mars was once much wetter and warmer than it is now. But if Mars still contains liquid water, it would enhance somewhat the prospect that the planet may harbour life of some sort (most likely microbial), plus also boost the viability of humans one day establishing a permanent base on the planet.
You can find out more information, plus also see images of the tendrils, in this Business Insider Australia report.