New Horizons and Ultima Thule flyby Megathread | AskScience Blog

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Thursday, January 3, 2019

New Horizons and Ultima Thule flyby Megathread

New Horizons and Ultima Thule flyby Megathread


New Horizons and Ultima Thule flyby Megathread

Posted: 02 Jan 2019 01:30 PM PST

On January 1st, 2018 2019, NASA's New Horizons flew past 2014 MU69 "Ultima Thule", the farthest object ever explored by a spacecraft. Ultima Thule is located in a region 1 billion miles past Pluto. We're starting to get data from this flyby, including photos and information about Ultima Thule. New Horizons is a NASA spacecraft launched in 2006 toward Pluto. After completing its mission in 2015 a mission extension was approved to study the outer asteroid belt of the solar system. The Ultima Thule flyby should help answer questions on how planets and comets form.

Links:

Some of our planetary science panelists will be around to answer your questions.

submitted by /u/AskScienceModerator
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Sometimes websites deny a password change because the new password is "similar" to the old one, How do they know that, if all they got is a hash that should be completely different if even 1 character was changed?

Posted: 02 Jan 2019 02:08 PM PST

Why is the effect of tinnitus a high pitched ring instead of a low hum or any other sound effect?

Posted: 02 Jan 2019 09:09 PM PST

What happens when a muscle cramps, and what happens if it cramps for too long? Does the muscle get damaged?

Posted: 02 Jan 2019 09:09 PM PST

If your muscle cramps for an extended period of time is there any damage to the underlying cells? Is there a lack of oxygen?

TIA!

submitted by /u/cantthink0fanything
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Why does anxiety/stress cause intestinal upset in some people?

Posted: 02 Jan 2019 08:24 PM PST

For example nausea or acid reflux?

submitted by /u/AboveAverageKoala
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Why does gold have only one stable isotope?

Posted: 03 Jan 2019 12:50 AM PST

Why does wood crackle/make sounds when it burns? Is the phenomenon constant w all fires?

Posted: 03 Jan 2019 04:09 AM PST

Title basically.

Might be more suitable in physics, but I thought the answer might be chemistry related.

submitted by /u/M0istWood
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How do we obtain Avogadro’s Constant?

Posted: 03 Jan 2019 04:11 AM PST

It's always been glossed over in my chemistry classes, and just told it's obtained through experiments.

So how do we obtain it? To my understanding it helps us convert from the atomic level to a more "able to measure" level.

submitted by /u/Meer_is_peak
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Why is the heliosphere elliptical or comet-like in shape?

Posted: 03 Jan 2019 12:53 AM PST

Is this because the Sun is rotating in the milky way creating a helio-tail?

submitted by /u/iceman_xiii
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Do aerodynamics matter in the vacuum space?

Posted: 02 Jan 2019 08:15 PM PST

Other then getting my craft though the atmosphere and into space, could I realistically have an odd shaped craft? And it fly correctly?

submitted by /u/ohhitslauraa
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Why did the Barbary Macaque persist in the Rif and Atlas region of Morocco, but not warmer regions of Europe like Spain and Sicily?

Posted: 02 Jan 2019 07:11 PM PST

I know there is a population in Gibraltar, but it is believed they were introduced sometime during early modernity. What was so special about the Rif and Atlas of Morocco that allowed the monkeys to survive that is lacking in desert Spain and Sicily?

submitted by /u/Pinuzzo
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What happens to the coolant (water) in nuclear power plants once it's been used?

Posted: 02 Jan 2019 12:53 PM PST

To the best of my knowledge, nuclear power plants circulate water through a vessel containing the fuel. What happens to this water once it's been used for cooling? Is it constantly recirculated?

It's probably radioactive after it's been used, correct? So what happens to it at the end of it's usable lifetime? Where does it go?

And how about the water in the spent fuel pool? How is this treated, or where is it stored after use?

submitted by /u/Lapidarist
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How is the mass of a moon calculated?

Posted: 02 Jan 2019 05:09 PM PST

I was looking at this wikipedia page: https://en.m.wikipedia.org/wiki/Phoebe_(moon) and was suprised to see that the mass was known to 4 decimal places. How do we know this?

submitted by /u/Tdiaz5
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How do animals know when another animal is dead?

Posted: 02 Jan 2019 08:00 PM PST

Aren’t the laws governing energy also remain invariant under translations in space and rotation as well (not only under time)?

Posted: 02 Jan 2019 08:26 PM PST

Does the right or left hemesphere of the brain control the penis?

Posted: 02 Jan 2019 06:49 PM PST

I seriously cannot find anything on google. Please help.

submitted by /u/uoy___kcuf
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Why the duration of interphase is much longer than in mitosis?

Posted: 02 Jan 2019 09:58 PM PST

I know interphase aims to prepare for cell division(eg.DNA replication, protein synthesis......). Yet, why is it necessary to spend so much time? In contrast, mitosis has different phases but it proceeds quickly.

submitted by /u/dgforainbow
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How do cinemas use 'night vision technology' to detect if people are recording the movie?

Posted: 02 Jan 2019 09:37 AM PST

How are muscle memories created and what can disrupt or influence them?

Posted: 02 Jan 2019 01:33 PM PST

Is there a difference between compound muscle memories (large movements of multiple body parts) vs smaller individual movements?

submitted by /u/-oeuf
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Do you appear to weigh more at the North Pole, or at the Equator?

Posted: 02 Jan 2019 03:02 PM PST

The Earth bulges around its Equator, thus the centrifugal effect at the equator will be larger. At the pole, they are about 21.4 km closer to Earth's centre and thus will feel more gravity. But what prevails, and what is the net effect on a person's weight?

submitted by /u/Aerothermal
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What happens atomically when saltwater is evaporated?

Posted: 02 Jan 2019 05:16 PM PST

Any help is much appreciated!

submitted by /u/BuddyHardinHolley
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