One frequently quoted study of the global costs of mitigating climate change put them at around $3 trillion by 2100, with the main benefits being felt between 2100 and 2200. Here is alternative way to spend around the same amount of money with around the same timescale of payback: terraforming Mars. A standard estimate is that, for about $2-$3 trillion, in between 100 and 200 years we would be able to get Mars from its current “red planet” (dead planet) status to ” blue planet” (i.e. a dense enough atmosphere and high enough temperature for Martian water in the poles and soil to melt, creating seas) – achievable in about 100 years – and from there to microbes and algae getting us to “green planet” status within 200 to 600 years.
We can terraform Mars for the same cost as mitigating climate change. Which would you rather? The Telegraph
Powerful Jets From Mars-Bound Comet Spied by Hubble National Geographic
After lurking in the outer reaches of the solar system for the past one million years, a comet is heading for a close encounter with Mars. The Hubble Space Telescope is keeping tabs on the icy interloper, seen in just-released images.
Comet C/2013 A1 (Siding Spring), which now lies some 353 million miles (568 million kilometers) from Earth, was discovered by Australia’s Robert McNaught, a prolific comet and asteroid hunter, more than a year ago. NASA’s Near-Earth Object Program Office at the Jet Propulsion Laboratory, in Pasadena, California, has been refining the comet’s exact trajectory ever since.
While researchers have ruled out a direct collision with Mars, the dusty coma of the comet (which is nearly as large as the entire Earth) will sweep directly across the red planet. The comet core, or nucleus, is expected make its closest approach to the red planet on October 19 at 2:28 p.m. ET. It will pass within 85,600 miles (137,760 kilometers) of Mars—less than half the distance from the Earth to the moon.
It’s no secret that uncurbed climate change and population growth are going to (and already have) put stress on the planet. But the situation is getting so bad that one prominent NASA scientist says we have to start thinking about terraforming Mars and that, in order for the human race to survive at current levels, we will eventually “need at least three planets.”
“The entire ecosystem is crashing,” Dennis Bushnell, chief scientist of NASA’s Langley Research Center said Thursday. “Essentially, there’s too many of us. We’ve been far too successful as the human animal. People allege we’re short 40-50 percent of a planet now. As the Asians and their billions come up to our living systems, we’re going to need three more planets.”
Bushnell was discussing the release of The Millennium Project’s “State of the Future,” an annual report that looks at global challenges and how they might be solved. He said that Mars is a good start, but we’d soon need even more space to live.
“If NASA terraforms Mars, that’ll take about 120 years, and that’s only one planet,” he said. “We’d need more shortly.”
Why a Mars Comet Impact Would be Awesome Discovery News
When Jupiter’s tides ripped Comet Shoemaker–Levy 9 to shreds, only for the icy chunks to succumb to the intense Jovian gravity, ultimately slamming into the gas giant’s atmosphere, mankind was treated to a rare cosmic spectacle (in human timescales at least). That was the first time in modern history that we saw a comet do battle with a planet… and lose.
But next year, astronomers think there’s a chance — albeit a small one — of a neighboring planet getting punched by an icy interplanetary interloper. However, this planet doesn’t have a generously thick atmosphere to soften the blow. Rather than causing bruises in a dense, molecular hydrogen atmosphere, this comet will pass through the atmosphere like it wasn’t even there and hit the planetary surface like a cosmic pile-driver, ripping into the crust.
What’s more, we’d have robotic eyes on the ground and in orbit should the worst happen.
Comet impact could make Red Planet inhabitable RT (Russia Today)
A comet near Mars may strike it in a powerful impact, potentially making the planet much warmer. The Red Planet is luring many entrepreneurs, including billionaire Dennis Tito, who aims to beat other nations by sending a man and a woman to Mars.
The make-or-break window for this possible game-changer is October 2014. At that time, an Oort cloud comet called C/2013 A1, first discovered last month, will approach Mars, missing it by about 35,000 km, which is quite close.
However the comet’s trajectory is still uncertain, which leaves a small chance it could impact the planet, said Russian astronomer Leonid Elenin, who worked on calculating the course of the celestial body. The comet will be travelling at a speed of 56 kilometers per second relative to Mars when it passes; if they do collide, the resulting explosion would be equal to a 20,000-gigaton bomb blast – powerful enough to leave a 50-kilometer crater on the planetary surface
The event would trigger a major change of the Martian climate, Australian space scientist Robert Matson explained. The impact would evaporate large amounts of water and carbon dioxide ice from the comet, spread across a planetary scale, making the climate on Mars much warmer due to the greenhouse effect.
Mars turns from dusty dead zone to Earth-like paradise in Terraform, a striking sci-fi short created by five recent graduates of French visual-effects school ArtFx.
“Terraform is a short film mixing live-action footage and CGI,” wrote team member Thomas Nivet in an e-mail to Wired. “It tells the story of the planet Mars, being terraformed.”
The six-minute short (above) flows like a folk tale being read to a child in a far-distant future. “One day, the fire birds tore the sky apart,” says the voiceover, just before a wave of terraforming machines blaze through the Martian atmosphere and land on the rocky red planet. Splendid shots of spaceships and other machinery follow.
The Mars Society is pleased to announce that ‘The Mars Underground’, a documentary film that became an instant classic among space enthusiasts, has been updated and revised by the director and released on DVD.
Leading aerospace engineer and Mars Society President Dr. Robert Zubrin has a dream. He wants to get humans to the planet Mars in the next ten years. Now, with the advent of a revolutionary plan, Mars Direct, Dr. Zubrin shows how we can use present day technology and natural resources on Mars to make human settlement possible. But can he win over the skeptics at NASA and the wider world?
‘The Mars Underground’ is a landmark documentary that follows Dr. Zubrin and his team as they try to bring this incredible dream to life. Through spellbinding animation, the film takes us on a daring first journey to the Red Planet and envisions a future Mars teeming with life and terraformed into a blue world. A must-see experience for anyone concerned for our global future and the triumph of the human spirit.
Synthetic organisms engineered to use carbon dioxide as a raw material could help humans settle Mars one day, a prominent biologist says.
Man-made, CO2-munching lifeforms are already in the works, geneticist Craig Venter told a crowd here during an event called TEDxNASA@SiliconValley Wednesday night (Aug. 17). Venter and his team, who made headlines last year by creating the world’s first synthetic organism, are trying to design cells that can use atmospheric carbon dioxide to make food, fuel, plastics and other products.
This ability would obviously have huge implications here on Earth, but it could also help make Mars — whose thin atmosphere is mostly carbon dioxide — a more livable place, Venter said.
Observations from NASA’s Mars Reconnaissance Orbiter have revealed possible flowing water during the warmest months on Mars.
“NASA’s Mars Exploration Program keeps bringing us closer to determining whether the Red Planet could harbor life in some form,” NASA Administrator Charles Bolden said, “and it reaffirms Mars as an important future destination for human exploration.”
Dark, finger-like features appear and extend down some Martian slopes during late spring through summer, fade in winter, and return during the next spring. Repeated observations have tracked the seasonal changes in these recurring features on several steep slopes in the middle latitudes of Mars’ southern hemisphere.
“The best explanation for these observations so far is the flow of briny water,” said Alfred McEwen of the University of Arizona, Tucson. McEwen is the principal investigator for the orbiter’s High Resolution Imaging Science Experiment (HiRISE) and lead author of a report about the recurring flows published in Thursday’s edition of the journal Science.
He spends his days battling kudzu, an invasive plant that has overrun millions of acres of land throughout the Southeastern United States. For his sixth grade science project, Schindler — now 17 years old — came up with the idea of planting kudzu on Mars.
“We breathe in oxygen, we breathe out CO2, and plants breathe in CO2 and breathe out oxygen. I started asking what would make it impossible to grow kudzu on Mars,” he said.
Experimenting with different gasses led him to find that helium killed the kudzu but without harming the other plants around it.