Posted on 08/04/2007 8:18:16 AM PDT by saganite
CAPE CANAVERAL, Fla. A robotic dirt and ice digger blasted off Saturday on a 422 million-mile journey to Mars that NASA hopes will culminate next spring in the first ever landing within the red planet's Arctic Circle.
The unmanned Delta rocket carrying the Phoenix Mars Lander rose from its seaside pad at 5:26 a.m., exactly on time, and hurtled through the clear moonlit sky. It was easily visible for nearly five minutes, a bright orange speck in a spray of stars.
The international space station emerged from Earth's shadow seconds before liftoff, a brilliant "star" above the launch pad, reports CBS News space analyst Bill Harwood. As the Delta II went supersonic, it streaked past Mars gleaming red in the morning sky 122 million miles away, a clearly visible target for NASA's newest robotic explorer.
"The sky was pitch black and the Delta II rocket created an artificial sunrise along Florida's space coast. It streaked through the sky, at first looking like a fireball, and then, like a comet tail, sounding like continuous thunder in the distance," reports CBS News correspondent Peter King from the Kennedy Space Center.
Just over a minute after launch, six solid rocket boosters dropped off while the Delta continued streaking upward, reports King.
If all goes as planned — a big if considering only five of the world's 15 attempts to land on Mars have succeeded — the spacecraft will set down on the Martian Arctic plains on May 25, 2008, and spend three months scooping up soil and ice, and analyzing the samples in minuscule ovens and mixing bowls.
The Phoenix Mars Lander won't be looking for evidence of life on Mars but rather traces of organic compounds in the baked and moistened samples, which would be a possible indicator of conditions favorable for life, either now or once upon a time.
If organic compounds are present on Mars, they're more likely to have been preserved in ice. That's why NASA is aiming for the planet's high northern latitudes, where ice is almost certainly lurking just beneath the surface.
Only about six inches of soft red soil should cover the ice, and so the digger shouldn't have to probe too deeply. The ice is expected to be as hard as concrete, and a drill on the scoop will help gather enough frozen samples. Some dirt and ice samples will be baked and their vapors analyzed. Other soil samples will be mixed with onboard water and the muddy soup examined by onboard microscopes.
"We're really going there just to understand whether the conditions might have been hospitable for microbial life at some point," said the University of Arizona's William Boynton, lead scientist for the oven experiment.
Even if organic molecules pop up, they could be from incoming meteorites, Boynton noted. "It is important, I think, to keep in mind that we are just looking for organic molecules to see if the conditions are right that they could survive," he said, "and that we aren't really going to be making any inference about whether these molecules are indicative of life."
Mars landings are especially risky. Only five of the 15 U.S., Russian and European attempts have worked, all of them American successes beginning with the 1976 Viking touchdowns. Given those odds, the Phoenix team said it did everything possible to test for failures and will continue to do so as the spacecraft flies to Mars. The entire mission costs $420 million.
NASA has never attempted to land a spacecraft on Mars at such a high northern latitude. A lander intended for the red planet's South Pole went silent immediately upon arrival in 1999. That failure, combined with the loss of the companion Mars orbiter, prompted NASA to cancel a 2001 lander mission. The parts from that scrapped mission were used for Phoenix, thus its name, which alludes to the mythological bird that rises from its own ashes.
Mars' North Pole would have been too cold for Phoenix to operate, and so scientists opted for a little lower latitude for touchdown. Phoenix will be shooting for 68.35 degrees north latitude, comparable to Greenland or northern Alaska, and 233 degrees east longitude. The lander will parachute down, with pulse thrusters easing its final descent.
Scientists chose the flattest, rock-free zone they could to ensure success. The target landing area is "Kansas flat," according to the spacecraft team, with few if any big rocks that could overturn the stationary three-legged lander or bump against its circular solar panels and jam them. The 772-pound lander will stretch 18 feet across once its solar panels are deployed on Mars, and its weather mast will tower 7 feet.
Phoenix should help pave the way for human visitors, especially if it confirms the presence of water ice in large amounts near the pole, said Michael Meyer, NASA's lead Mars scientist. That would be a tremendous resource, he noted. But if organic matter is indeed found, it could pose a dichotomy: "As Mars gets more interesting, you may not want to send humans right away until you learn out a little bit more about the red planet and find out whether or not life ever got started there."
Science fiction writer Kim Stanley Robinson, whose novel "Green Mars" is one of dozens of writings going up on a disk aboard Phoenix, is thrilled to see another robot headed to Mars.
The photos beamed back by recent Mars spacecraft "are just astonishingly precise compared to what I got to deal with when I was working on my books," he said. "It's like putting on glasses after you've been semi-blind all your life."
"I'm quite confident that humans will go to Mars and I do think it's important," Robinson said Friday. "When people get there, they'll be able to do on the ground what maybe 100 robotic missions would have been able to do."
ping
Too bad Pelosi, Ried, Murtha, the Clinton Clan, and Osamabamalamadingdong...weren’t attached to the thing...
I saw that post in the sidebar but with no update notification and I saw this morning when I woke up the launch had been successful so I decided to post a new thread.
I watched that launch this morning from the cockpit of my boat while having coffee.
Must have been spectacular. You’re a lucky individual.
This mission was assembled from pieces and parts left over from the ill-fated Mars Polar Lander project a couple years ago. The ship is moving 12,000 mph which seems fast considering the flight will take 9 months. Must be the way the planets line up.
Slept thru the whole thing BumP!
I didn’t know boats had cockpits..........
Hmmmmm - ain't going there :)
This is a good idea - - we better check out that arctic cirlce before it melts from "global warming".
“May 25, 2008,”
Added to microsoft outlook calendar file.
In smaller sea going vessels that is what the steering compartment is known as...it isnt until you get to the large (cruise sheeps, tankers, cargo ships, military ships of size) that the “cockpit” is referred to as the “bridge”...
I dont know what a cruise sheep is...hahahahaha...but I meant to write “cruise ship”
You were in the Coast Guard, am I right?............
A cruise sheep is one who is constantly on the move avoiding muslims.
May 25 sounds familiar. But something to do with the Moon...
Only a marine would write that...but, as a marine, I am sure you have heard the old Army joke about why the navy has marines on board their ships, right?
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