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The Cannonball Express!
Posted: Wed Nov 06, 2019 1:27 am
by neufer
orin stepanek wrote: ↑Tue Nov 05, 2019 12:45 pm
Voyager I and II; the little engines that could!
Wow; took 42 years to travel 2/3 of a light day! So; who would want to travel to the nearest exoplanet at 4 light years away?
How are these little space probes going to fare in interstellar space with all the extra radiation?
https://en.wikipedia.org/wiki/2I/Borisov wrote:
<<2I/Borisov, originally designated C/2019 Q4 (Borisov) is the first observed interstellar comet and the second observed interstellar interloper after ʻOumuamua.
As seen from Earth, the comet is in the northern sky from September until mid-November. It will cross the celestial equator on 13 November 2019 entering the southern sky. On 6 December 2019, the comet will be an equal distance of 2 au from the Sun and Earth. On 8 December 2019, the comet will come to perihelion (closest approach to the Sun) and will be near the edge of the inner asteroid belt. In late December, it will be about 1.9 au from Earth and have a solar elongation of about 80°. Due to its 44° orbital inclination, 2I/Borisov does not make any notable close approaches to the planets.
2I/Borisov entered the Solar System from the direction of Cassiopeia near the border with Perseus. This direction indicates that it originates from the galactic plane, rather than from the galactic halo. In interstellar space, 2I/Borisov takes roughly 9000 years to travel a light-year relative to the Sun. It will leave the Solar System in the direction of Telescopium. 2I/Borisov has passed within 5.7 light-years of the binary star system Kruger 60 (13.18 light-years away, in Cepheus) at a low velocity of 3.4 km/s around a million years ago.
2I/Borisov's trajectory is extremely hyperbolic, having an orbital eccentricity of 3.3 to 3.4. This is much higher than the 300+ known weakly hyperbolic comets, with heliocentric eccentricities just over 1, and even ʻOumuamua with an eccentricity of 1.2. 2I/Borisov also has a hyperbolic excess velocity (v∞) of 32 km/s, much higher than what could be explained by perturbations, which could produce velocities when approaching an infinite distance from the Sun of less than a few km/s. These two parameters are important indicators of 2I/Borisov's interstellar origin. For comparison, the Voyager 1 spacecraft, which is leaving the Solar System, is traveling at 16.9 km/s.>>
Re: Voyager I and II
Posted: Wed Jan 22, 2020 3:52 pm
by saturno2
Wikipedia wrote:
On december 10, 2007 (Voyager 2) discovered that the Solar System
Does not have a spherical shape but an oval shape, due to interstellar
Magnetic field of deep space
Re: Voyager I and II
Posted: Fri Aug 14, 2020 10:13 pm
by saturno2
Web: Mission Status-Voyager-NASA
It has important and updated information about
Voyager 1 and 2.
Re: Voyager I and II
Posted: Sat Nov 07, 2020 6:57 pm
by saturno2
NASA achieves to establish communication
with Voyager 2, again.
The communication with Voyager 2
was interrupted for 7 months
Re: Voyager I and II
Posted: Sun Nov 29, 2020 11:34 pm
by saturno2
Voyager 2 never ceases to amaze
According to APOD of 29/nov/2020 (Starship Asterisk),
the Voyager 2 spacecraft took an image in 1986 of the tallest known cliff
In the Solar System, called Verona Rupes, located on the moon
Miranda of Uranus.
This cliff has 20 km deep
Re: Voyager I and II
Posted: Fri Feb 26, 2021 9:27 pm
by saturno2
In 1986, Voyager 2 visited the planet Uranus.
It were discovered 2 new rings, 11 new moons
and they measured temperatures below
- 214 degrees Celsius.
By studying Voyager 2 data, scientists detect
that Uranus could be losing part of its atmosphere
through plasmoids, magnetic bubbles located at
the tail of the magnetic field.
( NASA Data)
Re: Voyager I and II
Posted: Sun Mar 07, 2021 9:26 pm
by saturno2
Scientists, studying the physical conditions of
The limit between the heliosphere and the
Heliopause, based on data from Voyager 2,
Formulate a new hypothesis:
It seems that the heliosphere does not has
A tail, similar to a comet, rather it is spherical.
Re: Voyager I and II
Posted: Mon Apr 05, 2021 6:50 am
by Forrest White
Each year, the energy production required for the probes drops by 4 watts. By 2025, it will fall to a critical level and will no longer be enough to communicate with the Earth. Then the scientists will turn off the devices on the Voyagers, but before that the specialists will establish a communication session with them in order to receive the last data stream.
Re: Voyager I and II
Posted: Sun May 16, 2021 11:41 pm
by saturno2
According to the data send by Voyager 1,
It have been detected in interstellar space,
Stable plasma emissions (far from the
Influence of the Sun )
The scientists wonder if that plasma
( ionized gas) belongs to the Sun or another
Source.
Re: Voyager I and II
Posted: Thu Mar 31, 2022 1:50 am
by saturno2
Voyager 2
Elapsed time of the mission
44 years 7 months 10 days
Distance from the Sun
129.80 AU
19.47 billion km
Speed relative to the Sun
15.28 km/ second
Re: Voyager I and II
Posted: Tue Jun 21, 2022 11:24 pm
by saturno2
Voyager 1 is sending confusing messages.
The cause of this anomaly is not yet know
Re: Voyager I and II
Posted: Mon Sep 05, 2022 2:36 am
by saturno2
It seems that the technicians responsible for
Voyager 1 have already corrected the failure of
the probe-
Some time ago Voyager 1 began to send to Earth
various data not compatible with reality.
The problem: the ship was processing data
on a computer out of use.
