Look Up At Behemoth Mars


In 2003 Mars was closer to Earth than any time in the past 60,000 years. Tonight Mars is slightly farther away, but won’t be this close again until 2035. Doesn’t have to be tonight, but please look up and ponder Mars.

Image result for find mars july 2018

Ours is not a symmetrical universe, celestial objects don’t march in perfect circular orbit. Mass, proximity, tilt of axis, speed of rotation and composition dictate elliptical waltzes across the night sky. Every elliptical planetary orbit has a closest point (perihelion) and farthest point (aphelion) from the Sun. On July 27, 2018 “opposition” placed Earth directly between Mars and the Sun, but thanks to elliptical orbit not closest to Earth until tonight. Time between Mars opposition and closest point to Earth varies from 8.5 days (1969) to 10 minutes (2208 and 2232).

So put Mars viewing on your calendar for 2016. You won’t see Mars this size again until 2018, when Mars will put on an even better show. Illustration via nasa.tumblr.com.

Illustration of a telescopic view of Mars at its last opposition in 2016, in contrast to 2018. Mars appears larger through a telescope in 2018. Its larger size in our sky means it’s brighter, very bright indeed, as you’ll see if you look for Mars tonight! Illustration via nasa.tumblr.com.

Mars will still be visible after July and August, 2018, but each month it will shrink in apparent size as Earth rushes ahead of Mars in our smaller, faster orbit around the sun. As telescopes show Mars smaller in apparent sky, our unaided eyes will see Mars fade in brightness. Image via NASA Tumblr.

http://earthsky.org/tonight

Ponder First ExoMars Images


ESA (European Space Agency) ExoMars Mission left our planet on March 14, 2016. Exo refers to Exobiology, the umbrella principle of a joint ESA and Russian mission to search for methane and other trace atmospheric Mars gases that might be signatures of biological life. Designed with several objectives, ExoMars arrived mid October 2016 as primary craft TGO (Trace Gas Orbiter) and Mars lander Schiaparelli.

Schiaparelli did her best, but not everything goes according to plan. Mission control’s best guess being Schiaparelli thrusters malfunctioned, pounding the lander to full fuel tank Martian oblivion at a violent 300 Km an hour.

 

This comparison of before-and-after images by NASA’s Mars Reconnaissance Orbiter shows two features likely created during the Oct. 19, 2016 landing attempt of the ExoMars Schiaparelli lander. The small bright feature at bottom is probably Schiaparelli’s parachute, while the dark, fuzzy blob is likely the lander’s crash site.

Credit: NASA/JPL-Caltech/MSSS

http://exploration.esa.int/mars/

Unfazed by Schiaparelli’s demise, TGO dutifully marches a four day orbital ellipse of Mars. A carefully prescribed stretched loop ranging in altitude from 300 to 96,000 Km. Beginning March 2017, mission control will order TGO to repeatedly dip into the upper atmosphere, depleting orbital energy and shrinking the ellipse. Objective – a near perfect circular orbit at 400 Km by March, 2018.

Meanwhile CaSSIS (Color and Stereo Surface Imaging System) aboard TGO returned mesmerizing first images of Mars.

A feature called Arsia-Chasmata, on the blanks of a martian volcano Arsia Mons. Width of this image is about 15 miles (25 km).

A feature called Arsia-Chasmata, on the blanks of a martian volcano Arsia Mons. Width of this image is about 15 miles (25 km). Image via ESA/ Roscosmos/ EsoMars/ CaSSIS/ UniBE.

First images from ExoMars mission

How To Get To Mars


Planets don’t circle the sun, their paths follow elliptical orbits. Think of them as race cars on separate tracks traveling at different speeds – sometimes they’ll whiz past each other, other times they’re far apart. Planetary distance is measured from the Sun, orbital point closest to the Sun is perihelion, furthest away is aphelion. The closest point between Earth and Mars happens when Earth is at aphelion, Mars is at perihelion, and both planets are on the same side of the Sun – this is called opposition. In theory, at true opposition Earth would be 54.6 million kilometers from Mars. I say theory because it hasn’t happened in recorded history, 2003 marked the closest nod in 50,000 years at 56 million kilometers.

So how do you get to Mars? Roughly every two years Earth/Mars orbits are close enough to contemplate interception. With current capabilities it takes approximately 250 days, all science has to do is calculate where Mars will be  when rovers come knocking. Take 6 minutes to ponder a clip from the 2006 IMAX documentary Roving Mars –

Our Next Chapter


Today, September 28, 2015 will forever stand as the date mankind closed a chapter in space history. All plot twists and dramatic interludes written to this point, upstaged by confirmation of seasonal water flows on Mars. Analysis of images from the Mars Reconnaissance Orbiter confirmed “seasonal dark streaks on Mars” (technically, recurring slope lineae )were the result of moving surface water.

Waxing and waning Martian streaks coincide with the seasons, actively darker and “moving” when temperatures hover between 0 – 30 degrees Fahrenheit, grinding to faded halts in colder weather. Media widely reports “flowing” water on Mars, an image that might conjure notions of rivers or freshwater pools – not so fast. Think along the line of trickles or oozing, no one knows where it comes from – theories range from melting sub-surface ice to salt crystals absorbing water vapor until reaching critical mass, bursting briefly to form muddy striations.

Martian water is so salty, the Dead Sea looks like a pristine mountain spring. Salty enough that temperatures of 21 degrees Fahrenheit (average air temperature on Earth required to form sea ice ) equate to the balmy days of Mars water “flows”.

http://earthsky.org/space/mars-has-flowing-water

Here are more recurring slope lineae, in this case some 100 meters long. Recently, planetary scientists detected hydrated salts on these slopes at Horowitz Crater, corroborating their original hypothesis that the streaks are formed by liquid water. Image via NASA / JPL / Univ. of Arizona.

Here are more recurring slope lineae, about 100 meters long. Image via NASA/ JPL/ Univ. of Arizona.

Flow, trickle, ooze, melt, crystallize, evaporate – I don’t mind, we have water on Mars. Our search for life demanded proof of liquid water, tomorrow we  begin the next chapter.

Mars.

Mars.

Curious Martian Sunset


April 15, 2015 NASA’s Mars Curiosity Rover spent the 956th day of its’ Martian mission deploying “mast cameras” from a position within the Gale Crater. Hoping to capture a transit of Mercury, Curiosity took 6.51 minutes to immortalize this time-lapse compilation of a Martian sunset. Ponder Curiosity’s first colour sunset from Mars.

View larger. | Mars sunset in Gale Crater, Sol 956, Wednesday, April 15, 2015.  Image via 34mm MastCam on Mars Curiosity rover.  Image via NASA / JPL / Malin Space Science Systems.

 

 

Ticket To Mars


Convincing myself it was only a matter of time doesn’t ease a simmering annoyance with Mars One. In recent years corporate interest in private space flight surfaced with increasing regularity. Virgin Galactic is attempting private space excursions, talk of mineral exploration, and private trips to the International Space Station are commonplace. Mars One is different – forget funding, practical science, technology or common sense. Mars One inked a reality television deal.

February 16, 2015 Dutch based Mars One announced their list of  “top 100” candidates for a one way ticket to Mars in 2024. NBC television announced a “reality” program to select 24 finalists from 50 men and 50 women destined to establish permanent Martian settlement – a one way ticket with no chance of ever returning to Earth. A peek at Mars One website cemented my suspicion, it was nothing more than opportunistic marketing – mindless fluff aimed at being first to corner an angle.

In this day and age minor details such as funding and probability of success evaporate once “reality” comes knocking. Mars One corporation is officially “non-profit” – ponder that a moment. A non-profit organization announces one way tickets to Mars in a 2013 contest, receives over 200,000 applicants, then announces 100 finalists before the ink is dry on a reality TV series. Feeble encouragement of “donations” suffocate the Mars One site. I like their “Business Model” link – interested corporate sponsors can look at a nifty graph illustrating benefits of Olympic corporate sponsorship. Apparently sponsorship delivers gold medal profits.

It would be tough to find a more fervent supporter of cosmic discovery than myself – harder still to find another as disgusted by Mars One audacity.

http://earthsky.org/space/100-to-compete-for-one-way-mars-trip?utm_source=EarthSky+News&utm_campaign=ea54e69884-EarthSky_News&utm_medium=email&utm_term=0_c643945d79-ea54e69884-393970565

http://www.mars-one.com/