Yes, strong evidence suggests Mars was once a blue planet with vast oceans, rivers, and a thicker atmosphere, much like early Earth, before losing most of its water and atmosphere, turning into the cold, red desert it is today due to solar wind stripping its atmosphere. NASA's MAVEN mission and rover data reveal geological features like ancient shorelines, riverbeds, and lake deposits, confirming a once-wet, potentially blue Mars with blue skies and red sunsets.
Ancient Egyptian astronomers would still recognize Mars today as the planet they called “Her Desher,” meaning “the red one.” Billions of years ago, however, liquid water on Mars' surface and an atmosphere probably made it more like a blue world than a dry, Red Planet.
Geologic clues suggest that Mars back then was covered with crater lakes, river valleys, and maybe even a large ocean in the northern hemisphere. Other evidence suggests that the planet was a glacial realm 3.8 billion years ago, with ice stretching from its poles and most liquid water trapped underground.
The surface color of the planet Mars appears reddish from a distance because of rusty atmospheric dust. From close up, it looks more of a butterscotch, and other common surface colors include golden, brown, tan, and greenish, depending on minerals.
Studies suggest that even if all the CO2 trapped in Mars's polar ice and regolith were released, it would not be enough to provide significant greenhouse warming to turn Mars into an Earth-like planet.
Even a small move closer to the sun could have a huge impact. That's because warming would cause glaciers to melt, raising sea levels and flooding most of the planet. Without land to absorb some of the sun's heat, temperatures on Earth would continue to rise.
The Martian environment poses special challenges to prospective Red Planet parents and their offspring. The effects of solar and cosmic ray radiation, reduced gravity, exposure to environmental toxins, even disrupted circadian rhythm can potentially impact parents and progeny alike.
No, water on Mars is not drinkable in its current form; it's frozen as ice or exists as extremely salty brines contaminated with toxic perchlorates, requiring significant purification (filtration, distillation, or specialized bioreactors) to remove salts and oxidizers before it could be used for human consumption or even rocket fuel. While Mars once had liquid water, today's Martian water sources need substantial treatment to become safe for drinking.
A layer of dust
Wind eroded these surface rocks and soil, and ancient volcanos blew out the iron, spreading it all over the planet. When this happened, the iron within the dust reacted with oxygen, producing a red rust color. So, Mars is red because it has a layer of rusty dust covering its entire surface!
Pluto is no longer considered a major planet because it doesn't meet the International Astronomical Union's (IAU) third rule for a planet: it hasn't "cleared its orbital neighborhood" of other objects, meaning its gravity isn't dominant enough to sweep away asteroids and dwarf planets in its path, like other large planets do. While it orbits the Sun and is round, its location in the crowded Kuiper Belt means it shares its orbit with many other similar bodies, leading to its reclassification as a dwarf planet in 2006.
Alyssa Carson. Alyssa Carson (born March 10, 2001) is an American social media influencer and space enthusiast known for her ambition from a young age to be the first person on Mars. She has attended numerous space camps and has visited every NASA visitor center.
He was often represented nude (as a symbol of fearlessness), muscular, standing resolute and holding or wearing items related to war – such as a spear, helmet and shield. However, the fact that he was married to Venus, the most beautiful of all goddesses, did not stop Mars from having several affairs with mortal men.
We can see light from 13.8 billion years ago, although it is not starlight, because there were no stars then. The farthest light we can see is the cosmic microwave background. The cosmic microwave background is the light left over from the Big Bang, forming at just 380,000 years after our cosmic birth.
The planet that experiences 42 years of darkness (and 42 years of light) at its poles is Uranus, due to its extreme axial tilt of about 98 degrees, making it "roll" on its side as it orbits the Sun. This unique tilt causes each pole to face the Sun continuously for 42 Earth years, followed by 42 years in darkness, while the equator experiences more typical day-night cycles.
Yes, Mars has oxygen but not very much and definitely not enough to just go out and breathe on the surface of Mars. NASA engineer Asad Aboobaker tells us more. The density of the oxygen on Mars is about 1/10,000th of what we have here on Earth.
Eau de Red Planet
Morie suspects that the predominant Mars odor is a slightly acrid, gassy smell of sulfur compounds, with a chalky, sweet overtone punching through. This scent would become a big part of Red Planet settlers' lives.
If you're going to Mars you'd best take along a jar of anti-aging cream because while you're there you're going to age faster than on Earth thanks to the Theory of Relativity. It's only 477 millionths of a second per day, but that tends to add up.
Over tens of thousands of years, Mars' climate could have dropped below freezing, pushing the microbes deeper underground. Eventually, ice clogged the crust's pores, cutting off their energy supply—and triggering mass extinction.
While it does not rain water on Mars, the planet does experience weather phenomena like dust storms and clouds. There is also evidence that liquid water once flowed on Mars, suggesting that rain in the form of water might have been possible in the planet's distant past.
Beneath the surface and locked in polar ice lies the key to human survival on the Red Planet. Scientists are developing ways to extract ice from Martian soil, melt it, purify it, and reuse it—turning scarcity into sustainability. That water wouldn't just be for drinking.
Researchers think meltwater beneath Martian ice could support microbial life. While actual evidence for life on Mars has never been found, a new NASA study proposes microbes could find a potential home beneath frozen water on the planet's surface.
In 2019, NASA astronaut Anne McClain found herself at the center of a headline-grabbing controversy—accused of committing the world's “first crime in space.” 🛰️ While on a six-month mission aboard the International Space Station, McClain's estranged spouse, Summer Worden, filed a federal complaint claiming McClain had ...
1 hour on Earth can equal 7 years in space (or vice versa) due to time dilation, a concept from Einstein's relativity where strong gravity or extreme speeds slow down time relative to an outside observer, famously depicted in the movie Interstellar on a planet near a black hole where an hour for the crew meant years passing on Earth. It's not about speed alone in orbit (ISS astronauts age slightly slower), but about proximity to immense mass, like a black hole, bending spacetime so drastically that time crawls for those nearby compared to time far away.
Return to the Moon
Artemis II, scheduled for launch between February and April sees the return of the first people to the Moon since Apollo 17 in 1972. Three American and one Canadian astronaut will orbit the Moon on a 10 day journey that lays the foundation for lunar landings in the coming years.