Deep Space

[Socrates the Greek]

Image above: The crew of space shuttle mission STS-125 gathered on the runway after the shuttle Atlantis landed. From left are Mike Massimino, Greg Johnson, Scott Altman, Megan McArthur, John Grunsfeld, Andrew Feustel and Michael Good. Image credit: NASA/Tony Landis
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[Socrates the Greek]

STS-125 - The Final Shuttle Mission to the Hubble Telescope

 

[Socrates the Greek]

Humanity's telescope the one and only Habble, too bad after 5 years the Habble is scheduled on a suicide mission through the earthian atmosphere.
I think NASSA should retrieve it and place it in an astronomical museum.

It is expressive to retrieve, but such a human achievement is necessary to preserve for other generations to see and enjoy.

 

[Socrates the Greek]

Nasa unveils Hubble's successor
The James Webb Space Telescope (JWST) is intended to replace the ageing Hubble telescope.

JWST is named after James E Webb, Nasa Administrator during the Apollo lunar exploration era; he served from 1961 to 1968
It will be placed 1.5m km from Earth, at Lagrange Point 2, an area of gravitational balance that keeps it in a Sun-Earth line
The telescope will be shaded from sunlight by a shield, enabling it to stay cold, increasing its sensitivity to infrared radiation
Three principal instruments will gather images of the Universe in the infrared region of the spectrum
These will yield new information about how stars and galaxies first formed a few hundred million years after the Big Bang


BBC NEWS | Americas | Nasa unveils Hubble's successor

 

[Socrates the Greek]

A Galactic Chart

This map is a plot of all the stars visible with the naked eye. There are approximately 9000 stars visible with the naked eye. This map is plotted in galactic coordinates - the plane of the Milky Way galaxy passes across the middle of this chart with the zero point of galactic latitude and longitude pointing directly at the galactic centre. The majority of the stars plotted on this map are within a thousand light years from us, which is only a minute part (less than 0.1%) of our galaxy, although there are a few naked eye stars which are probably beyond ten thousand light years. All of the 88 constellations have also been marked onto this map although constellations have no real significance - all constellations consist of stars that lie at very different distances. There is a negative version of this map which might be easier to print.

 

[Socrates the Greek]

Kepler, a Planet-Hunting Mission

May 14 & 15
Kepler, a NASA mission launching in the spring of 2009, is a spaceborne telescope designed to survey distant stars to see how common Earth-like planets are. Kepler will detect planets indirectly, using the "transit" method – measuring how a star’s light dims slightly as one of its planets passes in front of it. Besides revealing the presence of a planet, this light signature can also tell us the planet’s size and orbit. Other measures then are used to determine if each planet discovered is in the habitable zone; that is, at the distance from its star where liquid water could exist on the surface of the planet.

 

[Socrates the Greek]

The von Kármán Lecture Series

Advanced Propulsion for JPL Deep Space Missions

March 19 & 20
JPL’s Dawn mission is en route to rendezvous with the main-belt asteroids Vesta and Ceres, and is using ion propulsion to get there. Similar thrusters have been used by communications satellites to control their orbits around Earth, but Dawn is one of the first NASA missions to use this technology. Using electricity from solar panels, the system accelerates ionized xenon gas to very high velocities, resulting in a gentle but steady thrust over many days, weeks or months. Such “ion beams” pushing the spacecraft through the solar system greatly increases the amount of thrust available from each kilogram of propellant carried by the spacecraft – enabling a new range of NASA science missions. This talk will explain how electric thrusters work, and when and why it is desirable to use this new technology.

 

[GreenFish66]

Amazing !..

I kept in touch with astro_mike through twitter...Space is great..Spend most of my time there...(haha that 1 never get's old.)...

Great thread socrates ..Excellent pics..Very informative...Man.. This is better than the nasa site..!..Wish I would have found this thread earlier..

Oh well better late than never ..

Over and out there form here

 

[Socrates the Greek]

Amazing !..

I kept in touch with astro_mike through twitter...Space is great..Spend most of my time there...(haha that 1 never get's old.)...

Great thread socrates ..Excellent pics..Very informative...Man.. This is better than the nasa site..!..Wish I would have found this thread earlier..

Oh well better late than never ..

Over and out there form here

greenfish good evening to you, this subject has always fascinated me it is very deep ever expending and I know very little about it. I thank CC for providing the tools. Glad you enjoy................

 

[Socrates the Greek]

Note on Cosmic Distances

In astronomy, distances are measured in units of light years, where one light year is the distance that light travels in a year—10 trillion kilometers. For historical reasons having to do with measuring distances to nearby stars, professional astronomers use the unit of parsecs, with one parsec being equal to 3.26 light years.
Astronomers compute the distance to remote galaxies (ones that are more than about 20 million light years away) with Hubble's law. According to Hubble's law, the universe is expanding in such a way that distant galaxies are receding from one another with a speed which is proportional to their distance. The recession causes the radiation from a galaxy to shift to longer wavelengths—the red shift. From a measurement of the red shift and the constant of proportionality, called Hubble's constant, astronomers can determine the distance to a galaxy.
One of the central problems of modern astronomy is to accurately determine Hubble's constant, which is a measure of the rate of expansion of the universe. At present it is known to an accuracy of about 20 percent, so we usually modify distances by saying "about 100 million light years," for example. We assume throughout the Photo Album a value of the Hubble constant that corresponds to a recession velocity of 600 kilometers per second for a source at a distance of 30 million light years or 10 million parsecs (H0 = 60 km/s/Mpc).

 

[Socrates the Greek]

 

[Socrates the Greek]

How many human years whould it take to travle one light year?

At 1,000mps (3.6 Million miles per hour) 186 years.
At 30,000 km/hr each light second would take 10 hours.
At that rate 1 light year would take
3600*24*365.24
31556736
answer*10
315567360
answer/365.24/24
36,000 YEARS
40 light years would take 40 x 36,000 years = 1.440.000 man years to travel 40 light years.

 

[Socrates the Greek]

A light nearly six trillion) miles to a light year.

Our most distant space probe, the voyager 1, was 13 light 'hours' away from earth in 2004 and it took 27 years for it to reach that distance. it took us 27 years to send a device 13 light hours, not even a light year, just hours...i do not even think our brains can comprehend traveling something like 39 light years.

 

[Dexter Sinister]

How many human years whould it take to travle one light year?

Depends on the velocity, and from whose point of view you measure the time, ours here on earth or the traveller's. Those time intervals will be different, and more different the faster the traveller's going, from our point of view. I don't understand your calculation at all. A human year is a time interval, a light year is a distance.

 

[Socrates the Greek]

Depends on the velocity, and from whose point of view you measure the time, ours here on earth or the traveller's. Those time intervals will be different, and more different the faster the traveller's going, from our point of view. I don't understand your calculation at all. A human year is a time interval, a light year is a distance.

Good evening Dexter, I have come up with the calculation that 27 person-years (interval) with voyager 1 traveled the distance of space hours @ 17.000 mph and have only traveled space hours not even started or just started counting the beginning of a light year.

The big question how long will it take to travel from the Orion arm of the Milky Way to the same proximity as our solar system in the Milky Way but on the Andromeda galaxy.
@ 17,000 MPH the speed of Voyager 1,


I know that man will not be able to survive at this speed ph, being we need to have proper pressurization in order not to affect bodily function the travelers.

Human life span max 85 years
How far can man travel in 60 years if he or she starts at the age of 25 @ Atlantis Shuttle speed or Voyager 1?

How many 85 men year lifetimes we need to travel to Andromeda at space shuttle speed? 2 ½ million light years away?

 

[Dexter Sinister]

Good evening Dexter, I have come up with the calculation that 27 person-years (interval) with voyager 1 traveled the distance of space hours @ 17.000 mph and have only traveled space hours not even started or just started counting the beginning of a light year.

I have no idea what that means. However, at 17,000 mph you'll go about 4 billion miles in 27 years, about 0.07% of a light year. It'd take about 4 million years to go a light year at that speed, so to get to Andromeda at that speed would take about 9 trillion years, about 650 times longer than the current best estimate for the age of the universe. Unless I've slipped a decimal point somewhere with my calculator, which is entirely possible, I'm tired this evening. But take what comfort you can from this: you'd have aged about 3000 years less than that on the journey, thanks to relativistic time dilation. :smile:

On the other hand, the Andromeda galaxy and ours are approaching each other. It's not a direct approach, they'll circle each other for a bit and spiral into a collision, so if you can wait 3 or 4 billion years, it'll be here.

 

[Socrates the Greek]

I have no idea what that means. However, at 17,000 mph you'll go about 4 billion miles in 27 years, about 0.07% of a light year. It'd take about 4 million years to go a light year at that speed, so to get to Andromeda at that speed would take about 9 trillion years, about 650 times longer than the current best estimate for the age of the universe. Unless I've slipped a decimal point somewhere with my calculator, which is entirely possible, I'm tired this evening. But take what comfort you can from this: you'd have aged about 3000 years less than that on the journey, thanks to relativistic time dilation. :smile:

On the other hand, the Andromeda galaxy and ours are approaching each other. It's not a direct approach, they'll circle each other for a bit and spiral into a collision, so if you can wait 3 or 4 billion years, it'll be here.

Great day to you Dexter, I decided to stay home that is too farrrrrrrr to go.
hahahahah, thank you for your contribution. I wonder how long it took for the creator of this entire cosmos to put in place with such a master plan. Everything revolving with such precision around each other?

 

[Dexter Sinister]

I wonder how long it took for the creator of this entire cosmos to put in place with such a master plan.

I'd guess about 10^-43 seconds.

 

[Socrates the Greek]

i'd guess about 10^-43 seconds.

 

[Socrates the Greek]

YouTube - Listen to the sound of space-Voice from Space