New Mars Forums

Official discussion forum of The Mars Society and MarsNews.com

You are not logged in.

Announcement

Announcement: We've recently made changes to our user database and have removed inactive and spam users. If you can not login, please re-register.

#1 2017-07-09 04:51:28

Dave_Duca
Member
From: Oconto, WI usa
Registered: 2017-03-15
Posts: 92

Orbiting Debri and the Unspoken Reluctance

Yet another cog of the dynamic space mechanism is the certainty of a complete mission.
Until a high speed object of sufficient mass, decimates the spacecraft's hull integrity
and surgically removes the soul from any of its Crew Members.

The mere mention of Don Kessler (nasa) should be unnerving to the Space Faring Enthusiast.
Kessler Syndrome is the "collision cascading" of any two orbiting objects, dispersing a lethal layer around
our planet and impeding the interplanetary passage of humans traversing safely to and from Mars.
The same is equally obvious for the Red Planet.

Currently, 14 objects are orbiting Mars...
Mars-2, launched 1971 May 19, USSR, inactive
Mars-3, launched 1971 May 28, USSR, inactive
Mariner 9, launched 1971 May 30, USA, inactive
Mars-5, launched 1973 July 25, USSR, inactive
Viking 1, launched 1975 August 20, USA, inactive
Viking 2, launched 1975 September 9, USA, inactive
Phobos-2, launched 1988 July 12, USSR, inactive
Mars Global Surveyor, launched 1996 November 7, USA, inactive
2001 Mars Odyssey, launched 2001 April 7, USA, active
Mars Express, launched 2003 June 2, ESA, active
Mars Reconnaissance Orbiter, launched 2005 August 12, USA, active
Mars Orbiter Mission (MOM) or Mangalyaan, launched 2013 November 5, India, active
Mars Atmosphere and Volatile Evolution (MAVEN), USA, active
ExoMars Trace Gas Orbiter, launched 2016 March 14, ESA and Russia, active

All space agencies are tracking everything that is known in Mars' proximity.
Between now and then, the theories of de-orbiting look good on paper.
Until an anomaly says otherwise.

Mars is not protected by the Inverse Square Law when impeding space weather bears down from
the occasional plasma bursts. The physical effects of a Solar Anemometer is proof of that.
Perturbations of orbit will occur, and there's little control from our end.

So the question is presented... how much more cost-effectively-smarter of probes will we send, in order to
do more with less hardware at location?

Last edited by Dave_Duca (2017-07-09 04:53:27)

Offline

#2 2017-07-09 08:51:12

RobS
Member
From: South Bend, IN
Registered: 2002-01-15
Posts: 1,701
Website

Re: Orbiting Debri and the Unspoken Reluctance

Space around Mars is BIG so the chance of collision with debris is still close to zero. Consider the International Space Station doesn't have to dodge objects very often and terrestrial orbit is swarming with hundreds of thousands of tiny bits of spacecraft.

Offline

#3 2017-07-09 11:27:16

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 18,570

Re: Orbiting Debri and the Unspoken Reluctance

Disclaimer: This material is being kept online for historical purposes.  Page Last Updated: February 16, 2013
https://www.nasa.gov/directorates/space … ation.html

Space Junk Clean Up: 7 Wild Ways to Destroy Orbital Debris

aHR0cDovL3d3dy5zcGFjZS5jb20vaW1hZ2VzL2kvMDAwLzAyOC81ODMvb3JpZ2luYWwvZWFydGgtZGVicmlzLWxhcmdlLmpwZw==
With half a million pieces of space debris cluttering Earth's orbit,

A Japanese Space Junk Removal Experiment Has Failed in Orbit as it was to unfurl a net to collect the pieces.

Space junk is a growing problem in low-Earth orbit. Since the beginning of the space age, debris as small as flecks of paint and as large as whole satellites and parts of rocket boosters have been accumulating and it is estimated that over 100 million individual pieces of junk (tens of thousands of pieces that are over 10 centimeters in size) are whizzing around our planet.

Meet the Space Custodians: Debris Cleanup Plans Emerge

The U.S. Space Surveillance Network currently tracks some 18,000 objects larger than 4 inches (10 centimeters), of which only 1,200 are intact, operational satellites. In addition to that, there are 750,000 so-called "flying bullets" about 0.4 inches (1 cm) in size and around 150 million fragments smaller than 1 millimeter

Offline

#4 2017-07-09 17:55:35

Dave_Duca
Member
From: Oconto, WI usa
Registered: 2017-03-15
Posts: 92

Re: Orbiting Debri and the Unspoken Reluctance

Meanwhile....
  Let's REMEMBER our history and not replicate this conflagration for Mars.

Offline

#5 2017-07-09 18:32:06

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 18,570

Re: Orbiting Debri and the Unspoken Reluctance

According to the https://en.wikipedia.org/wiki/List_of_a … ts_on_Mars not much is in orbit but rather is littering the surface of mars..images of stuff that is on the ground  http://www.thelivingmoon.com/46_mike_si … is_01.html ..
http://www.astrobio.net/mars/evocative- … portunity/
.of which some of these did have orbiters that are for the most part on a decaying path....

NASA Orbital Debris Program Office

Offline

#6 2017-07-10 04:32:16

Antius
Member
From: Cumbria, UK
Registered: 2007-05-22
Posts: 1,003

Re: Orbiting Debri and the Unspoken Reluctance

I wonder if phobos is a source of dangerous debris?  A single impact on the surface of the moon would generate many times its own weight in debris, most of which would exceed the moon's escape velocity.  Admittedly, the moon's gravity would also hoover up any debris generated by impacts.

There would appear to be no easy solution to debris cluttering Earth's orbit.  The larger pieces can be intercepted and their orbits altered to intersect Earth's upper atmosphere.  It is the smaller bits that are problematic.  Maybe laser beams can be used to alter the orbits of small debris?

Offline

#7 2017-07-10 18:16:00

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 18,570

Re: Orbiting Debri and the Unspoken Reluctance

It is said that if the moons of mars do break up that a ring of debri would be created.

Mars May Become a Ringed Planet Someday

Mars to lose its largest moon, but gain a ring

Mars could gain a ring in 10-20 million years when its moon Phobos is torn to shreds by Mars gravity.

New theory suggests Mars had rings in the past And Phobos could become more rings in the future.

mars_ring750-410x273.jpg

Offline

#8 2019-12-10 20:25:16

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 18,570

Re: Orbiting Debri and the Unspoken Reluctance

ESA commissions world's first space debris removal

ClearSpace-1 will be the first space mission to remove an item of debris from orbit, planned for launch in 2025.
"The space debris issue is more pressing than ever before. Today we have nearly 2000 live satellites in space and more than 3000 failed ones.

The ClearSpace-1 mission will target the Vespa (Vega Secondary Payload Adapter) upper stage left in an approximately 800 km by 660 km altitude orbit after the second flight of ESA's Vega launcher back in 2013. With a mass of 100 kg, the Vespa is close in size to a small satellite, while its relatively simple shape and sturdy construction make it a suitable first goal, before progressing to larger, more challenging captures by follow-up missions - eventually including multi-object capture.

The ClearSpace-1 'chaser' will be launched into a lower 500-km orbit for commissioning and critical tests before being raised to the target orbit for rendezvous and capture using a quartet of robotic arms under ESA supervision. The combined chaser plus Vespa will then be deorbited to burn up in the atmosphere.

Offline

Board footer

Powered by FluxBB