It Came From Another Star

louis · 2018-11-06 15:21:09

Scientists say it could have been a probe from another space-faring civilisation, sent to investigate us....but one that built a craft that can travel at nearly 200,000 MPH.

https://edition.cnn.com/2018/11/06/heal … rce=twCNNi

kbd512 · 2018-11-06 18:05:00

Or it could just be an oddly-shaped space rock ejected by a giant explosion. The interstellar aliens explanation sounds way cooler, though.

SpaceNut · 2018-11-06 18:17:40

https://en.wikipedia.org/wiki/ʻOumuamua

‘Oumuamua, oh my! Was interstellar object actually an alien solar sail? Not so fast

https://www.geekwire.com/tag/oumuamua/

‘Oumuamua is long gone from the inner solar system, but the mystery surrounding the interstellar interloper has been rekindled, thanks to a research paper written by two Harvard astronomers.

https://gizmodo.com/no-oumuamua-is-prob … 1830255239

On ‘Oumuamua’s arrival, scientists found that the object measured 800 meters by 80 meters by 80 meters (approximately a half mile long and 260 feet in diameter) and took a hyperbolic path through the Solar System. In other words, it wasn’t orbiting the Sun—its angle and speed suggested that it was visiting and then leaving.

We will probably never know but if we did fund the vessel to track it we need to get going quickly as we may not be able to catch up.

Void · 2018-11-06 20:10:19

They took a look and decided to leave.

louis · 2018-11-06 21:12:23

True, but I accurately reflected the opinion of the scientists didn't I?

kbd512 wrote:

Or it could just be an oddly-shaped space rock ejected by a giant explosion. The interstellar aliens explanation sounds way cooler, though.

louis · 2018-11-06 21:13:58

"Mr Spock, you are being too rational."

Void wrote:

They took a look and decided to leave.

louis · 2018-11-11 17:48:15

A nice clear view on this from Martian Wolf.

https://www.youtube.com/watch?v=m26hd1aSpy4

SpaceNut · 2018-11-11 18:12:31

Hey, scotty can you give me some more warp drive as we are in hot pursuit of this alien invader...

Face it we were not ready to go and explore where it came from and not even able to do real science on it by landing to work it while we can....

louis · 2018-11-11 20:36:09

We certainly didn't get a close up view.

SpaceNut wrote:

Hey, scotty can you give me some more warp drive as we are in hot pursuit of this alien invader...
Face it we were not ready to go and explore where it came from and not even able to do real science on it by landing to work it while we can....

SpaceNut · 2018-11-11 21:02:27

https://solarsystem.nasa.gov/small-bodi … /in-depth/

Oumuamua slingshotted past the Sun on Sept. 9, 2017 at a blistering speed of 196,000 miles per hour (87.3 kilometers per second) on its wayback out of the solar system. It will continue to slow down until it reaches a speed of 26.33 km/s relative to the Sun, the same speed it had before its approach to the Solar System. It will take the object roughly 20,000 years to leave the Solar System completely. It’s headed towards the constellation of Pegasus.

https://www.skyandtelescope.com/astrono … -oumuamua/

SpaceNut · 2019-10-11 18:53:31

Seems we have another coming into the solar system.

https://www.livescience.com/mysterious- … risov.html

A Second Interstellar Visitor Has Arrived in Our Solar System. This Time, Astronomers Think They Know Where It Came From

second related topic http://newmars.com/forums/viewtopic.php?id=8973

tahanson43206 · 2021-07-05 11:16:24

The story at the link below ought to be a good fit for the NewMars forum:

https://www.msn.com/en-us/news/technolo … hp&pc=U531

The study suggests that the light-sail powered cube satellite could be sent into space ahead of time, essentially 'parked' near the sun until the orbit of the ISO is determined.
Once it's found, the trajectory of the sail could be targeted to the perihelion - the point in the orbit at which it's closes to the sun - to figure out the right velocity to intercept the ISO.
It would happen in four phases: 'Earth to perihelion, ISO orbit alignment, around the Sun to solar system escape velocity, approach and intercept with the ISO.'
The sail craft would have an escape velocity of more than six astronomical units (AU) per year, or roughly 558 million miles.
'This would permit rapid response to a new ISO discovery and an intercept within 10 AU from the sun,' the researchers added.
The distance between the Earth and the sun is one astronomical unit, or approximately 93 million miles.
If it were a five-year mission, the light sail-powered cube sat could catch and study the ISO, while a ten-year mission could even bring back a sample, the researchers added.
Both technologies - cubesats and light-sails - have been proven in space.
The Mars Cube One, launched in March 2018, was one of the first interplanetary small satellites.
Conversely, lightsail missions in 2013 - from Earth to Venus - and in 2021 - in Earth orbit - have already taken place.
Given the close proximity to the sun, the solar sail would need to be able to manage heat.
If it were aluminum coated with Kapton, it could withstand the heat from the sun due to the high melting point of aluminum (approximately 930 Kelvin) if it were within 0.15 AU of the sun.
The benefits of such a spacecraft would not only allow astronomers to better study ISOs and potentially even learn their origin, but it could also be used for planetary defense, planet formation and learning more about the solar system, among other benefits.
'The scientific return from such investigations is invaluable, as comparative studies between an ISO sample return with solar system asteroid and comet sample returns can help us understand the conditions and processes of solar system formation and the nature of the interstellar matter,' the researchers wrote in the study.
'With many new ISOs expected the significance of such an investigation is of the highest priority.'
The findings have been published in the pre-print journal arXiv and can be read here.
Read more

This concept should be of interest to Quaoar?

(th)

Mars_B4_Moon · 2021-10-18 10:28:17

Reaching an Interstellar Interloper

https://www.centauri-dreams.org/2021/10 … nterloper/

Calliban · 2021-10-18 10:33:48

kbd512 wrote:

Or it could just be an oddly-shaped space rock ejected by a giant explosion. The interstellar aliens explanation sounds way cooler, though.

Not a very effective probe if it is traveling that slowly. A speed of 87km/s is quite slow and that is after it has fallen into the sun's gravity well. Maybe it is full of protomolecule? Now there is a scary thought!

Mars_B4_Moon · 2022-03-02 07:43:58

Could we send a spacecraft to Oumuamua?
https://news.yahoo.com/could-send-space … D=ref_fark

An exocomet, or extrasolar comet, is a comet outside the Solar System, which includes rogue comets and comets that orbit stars other than the Sun. The first exocomets were detected in 1987 around Beta Pictoris, a very young A-type main-sequence star. There are now (as of February 2019) a total of 27 stars around which exocomets have been observed or suspected.
https://en.wikipedia.org/wiki/Exocomet

Mars_B4_Moon · 2022-04-30 05:17:45

Discovery of 30 exocomets in a young planetary system

https://www.spacedaily.com/reports/Disc … m_999.html

Mars_B4_Moon · 2022-09-23 14:10:54

The Interstellar Interlopers

https://spaceref.com/newspace-and-tech/ … terlopers/

Interstellar interlopers are bodies formed outside of the solar system but observed passing through it. The first two identified interlopers, 1I/`Oumuamua and 2I/Borisov, exhibited unexpectedly different physical properties.

Mars_B4_Moon · 2023-07-08 11:53:49

Asteroid, UFO, UAP, Meteorite news sounding like a crazy scifi plot.

'Harvard Professor Believes He's Found Fragments of Alien Technology'

https://www.cbsnews.com/boston/news/avi … fragments/

Harvard professor Avi Loeb believes he may have found fragments of alien technology from a meteor that landed in the waters off of Papua, New Guinea in 2014. CBS News reports:
Loeb and his team just brought the materials back to Harvard for analysis. The U.S. Space Command confirmed with almost near certainty, 99.999%, that the material came from another solar system. The government gave Loeb a 10 km (6.2 mile) radius of where it may have landed. "That is where the fireball took place, and the government detected it from the Department of Defense. It's a very big area, the size of Boston, so we wanted to pin it down," said Loeb. "We figured the distance of the fireball based off the time delay between the arrival of blast wave, the boom of explosion, and the light that arrived quickly."

Their calculations allowed them to chart the potential path of the meteor. Those calculations happened to carve a path right through the same projected 10 km range that came from the U.S. government. Loeb and his crew took a boat called the Silver Star out to the area. The ship took numerous passes along and around the meteor's projected path. Researchers combed the ocean floor by attaching a sled full of magnets to their boat. "We found ten spherules. These are almost perfect spheres, or metallic marbles. When you look at them through a microscope, they look very distinct from the background," explained Loeb, "They have colors of gold, blue, brown, and some of them resemble a miniature of the Earth."

An analysis of the composition showed that the spherules are made of 84% iron, 8% silicon, 4% magnesium, and 2% titanium, plus trace elements. They are sub-millimeter in size. The crew found 50 of them in total. "It has material strength that is tougher than all space rock that were seen before, and catalogued by NASA," added Loeb, "We calculated its speed outside the solar system. It was 60 km per second, faster than 95% of all stars in the vicinity of the sun. The fact that it was made of materials tougher than even iron meteorites, and moving faster than 95% of all stars in the vicinity of the sun, suggested potentially it could be a spacecraft from another civilization or some technological gadget." He likens the situation to any of the Voyager spacecrafts launched by NASA.

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#1 2018-11-06 15:21:09

It Came From Another Star

#2 2018-11-06 18:05:00

Re: It Came From Another Star

#3 2018-11-06 18:17:40

Re: It Came From Another Star

#4 2018-11-06 20:10:19

Re: It Came From Another Star

#5 2018-11-06 21:12:23

Re: It Came From Another Star

#6 2018-11-06 21:13:58

Re: It Came From Another Star

#7 2018-11-11 17:48:15

Re: It Came From Another Star

#8 2018-11-11 18:12:31

Re: It Came From Another Star

#9 2018-11-11 20:36:09

Re: It Came From Another Star

#10 2018-11-11 21:02:27

Re: It Came From Another Star

#11 2019-10-11 18:53:31

Re: It Came From Another Star

#12 2021-07-05 11:16:24

Re: It Came From Another Star

#13 2021-10-18 10:28:17

Re: It Came From Another Star

#14 2021-10-18 10:33:48

Re: It Came From Another Star

#15 2022-03-02 07:43:58

Re: It Came From Another Star

#16 2022-04-30 05:17:45

Re: It Came From Another Star

#17 2022-09-23 14:10:54

Re: It Came From Another Star

#18 2023-07-08 11:53:49

Re: It Came From Another Star

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