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Dawn Spacecraft Begins Approach to Dwarf Planet Ceres

 
Anonymous Coward
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01/03/2015 10:44 AM
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Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Dec 30, 2014: NASA's Dawn spacecraft has entered an approach phase in which it will continue to close in on Ceres, a Texas-sized dwarf planet never before visited by a spacecraft. Dawn launched in 2007 and is scheduled to enter Ceres orbit in March 2015.

"Ceres is almost a complete mystery to us," said Christopher Russell, principal investigator for the Dawn mission, based at the University of California, Los Angeles. "Ceres has no meteorites linked to it to help reveal its secrets. All we can predict with confidence is that we will be surprised."

[link to science.nasa.gov]
Anonymous Coward
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01/03/2015 10:52 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
...and I can predict all we will see are some ridiculous computer generated image and more BS from NASA.

I still think they should strap an IPhone to these satellites so we can get some decent shots.

liars
Anonymous Coward
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01/03/2015 10:54 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
5a
Anonymous Coward
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01/03/2015 10:56 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
They cant show the public what they have found as it would show rival countries too.
They dont do anything for the betterment of mankind.
KipKat

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01/03/2015 11:01 AM

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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
I hope they like visitors!

alien03
butt
kkwapper
Anonymous Coward (OP)
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01/03/2015 11:12 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
I hope they like visitors!

alien03
butt
 Quoting: KipKat


"My pants,... metal."

~ Colin Mochrie
Engonoceras

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01/03/2015 11:21 AM

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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
The equally fascinating part is the success of "ion propulsion".

"... The spacecraft uses ion propulsion to traverse space far more efficiently than if it used chemical propulsion. In an ion propulsion engine, an electrical charge is applied to xenon gas, and charged metal grids accelerate the xenon particles out of the thruster. These particles push back on the thruster as they exit, creating a reaction force that propels the spacecraft. Dawn has now completed five years of accumulated thrust time, far more than any other spacecraft... "

Last Edited by Regal Beast on 01/03/2015 11:22 AM
Anonymous Coward
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01/03/2015 11:35 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
they probably already heard via the grapevine we're headed their way
Chugiakian

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01/03/2015 11:35 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
...and I can predict all we will see are some ridiculous computer generated image and more BS from NASA.

I still think they should strap an IPhone to these satellites so we can get some decent shots.

liars
 Quoting: Anonymous Coward 5353045


After all, It is using technology from 2007, lol
Chugiakian
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Bent~The Lost

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01/03/2015 11:40 AM

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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Anonymous Coward
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01/03/2015 11:41 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
The equally fascinating part is the success of "ion propulsion".

"... The spacecraft uses ion propulsion to traverse space far more efficiently than if it used chemical propulsion. In an ion propulsion engine, an electrical charge is applied to xenon gas, and charged metal grids accelerate the xenon particles out of the thruster. These particles push back on the thruster as they exit, creating a reaction force that propels the spacecraft. Dawn has now completed five years of accumulated thrust time, far more than any other spacecraft... "
 Quoting: Engonoceras


They weren't even sure that the ion propulsion engine would work in "space" like they'd hoped. The first ion propulsion engine was made in 1960 (that we know of) but they had only done minimal testing on a small scale in space...

Here's a cool presentation of how an ion propulsion engine works.

Anonymous Coward
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01/03/2015 11:55 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Fuck Nasa.

Gonna just throw this out there: never heard or Dawn or Ceres. It sounds very interesting and cool. Like something I wouldn't mind the gov't throwing some scratch at.

Why do I say this?
Nasa has a bigger PR department than fucking MacDonalds. Might even rival Coca-Cola. All government employees and government contractors. I don't live in a bunker with no internet, TV or radio.

Like I said, never heard of it.
Anonymous Coward
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01/03/2015 11:56 AM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Ceres

Asteroid

Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter. It is composed of rock and ice, is 950 km in diameter, containing a third of the mass of the asteroid belt.

Wikipedia:

Mass: 895.8E18 kg

Orbital period: 1,680 days

Gravity: 0.27 m/s²

Discovered: January 1, 1801

Orbits: Sun

Spectral type: C-type asteroid
Anonymous Coward
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01/03/2015 12:12 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Wow, never heard of Ceres, what the hell are they teaching in schools nowadays? We learned about it back in the freaking 70's, public-school even.
Dark_Matter

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01/03/2015 12:21 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Ceres

Asteroid

Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter. It is composed of rock and ice, is 950 km in diameter, containing a third of the mass of the asteroid belt.

Wikipedia:

Mass: 895.8E18 kg

Orbital period: 1,680 days

Gravity: 0.27 m/s²

Discovered: January 1, 1801

Orbits: Sun

Spectral type: C-type asteroid
 Quoting: Creeping Death


wow......
how can they no nothing about a planet called Ceres in 2007, but name ab asteroid Ceres in 1801

an asteroid that is 950km?!........
Anonymous Coward
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01/03/2015 12:29 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Ceres

Asteroid

Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter. It is composed of rock and ice, is 950 km in diameter, containing a third of the mass of the asteroid belt.

Wikipedia:

Mass: 895.8E18 kg

Orbital period: 1,680 days

Gravity: 0.27 m/s²

Discovered: January 1, 1801

Orbits: Sun

Spectral type: C-type asteroid
 Quoting: Creeping Death


wow......
how can they no nothing about a planet called Ceres in 2007, but name ab asteroid Ceres in 1801

an asteroid that is 950km?!........
 Quoting: Dark_Matter


It's an Assmasteroid!
Anonymous Coward
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01/03/2015 12:37 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
The border jumpers will now invade Ceres. verysad
OCD Chaos Theorist

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01/03/2015 01:13 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
We are now....the aliens!
 Quoting: Chip


I kind of suspect we always have been. spock
I wish I had more time so I could do even less.
Roobit

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01/03/2015 01:19 PM

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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
We are now....the aliens!
 Quoting: Chip


All your asteroids are belong to us now.
The Abyss stares back...

Glp ping pong champ...
Anonymous Coward
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01/03/2015 01:56 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
We are now....the aliens!
 Quoting: Chip


All your asteroids are belong to us now.
 Quoting: Roobit


Move Zig ... For Great Justice!

scream
Anonymous Coward
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01/03/2015 02:00 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Ceres

Asteroid

Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter. It is composed of rock and ice, is 950 km in diameter, containing a third of the mass of the asteroid belt.

Wikipedia:

Mass: 895.8E18 kg

Orbital period: 1,680 days

Gravity: 0.27 m/s²

Discovered: January 1, 1801

Orbits: Sun

Spectral type: C-type asteroid
 Quoting: Creeping Death


wow......
how can they no nothing about a planet called Ceres in 2007, but name ab asteroid Ceres in 1801

an asteroid that is 950km?!........
 Quoting: Dark_Matter


It's unofficially a dwarf planet. I say unofficially because a lot of people assume it is and this doesn't get corrected. IIRC this is largely due to the term asteroid being loosely defined and no exact boundary where you go from asteroid to planet, so Ceres being called a dwarf planet can't be challenged very well.
Dark_Matter

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01/03/2015 02:15 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
Ceres

Asteroid

Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter. It is composed of rock and ice, is 950 km in diameter, containing a third of the mass of the asteroid belt.

Wikipedia:

Mass: 895.8E18 kg

Orbital period: 1,680 days

Gravity: 0.27 m/s²

Discovered: January 1, 1801

Orbits: Sun

Spectral type: C-type asteroid
 Quoting: Creeping Death


wow......
how can they no nothing about a planet called Ceres in 2007, but name ab asteroid Ceres in 1801

an asteroid that is 950km?!........
 Quoting: Dark_Matter


It's unofficially a dwarf planet. I say unofficially because a lot of people assume it is and this doesn't get corrected. IIRC this is largely due to the term asteroid being loosely defined and no exact boundary where you go from asteroid to planet, so Ceres being called a dwarf planet can't be challenged very well.
 Quoting: Anonymous Coward 36140110


considering its outgasing
id say its more of a comet planet© (lol) than an asteroid or dwarf planet....

reminds me of the funny thread 'Mars gone comet' after ISON.....
Ceres gone comet alright!!
Anonymous Coward
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01/03/2015 03:00 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
watervapor emissions??? CRYOVOLCANOES!!!
Maybe it even has a moon!!!
Neptune Fabman

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01/03/2015 10:27 PM
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Re: Dawn Spacecraft Begins Approach to Dwarf Planet Ceres
We are now....the aliens!
 Quoting: Chip


I kind of suspect we always have been. spock
 Quoting: OCD Chaos Theorist


hesright


...
...Your Own Personal Jesus...





GLP