r/SpaceVideos Dec 31 '22

Sidebar Updates: New Rule: All Posts Must Come with Commentary

2 Upvotes

In an effort to increase activity and discussion on this subreddit, all new posts must include commentary posted within an hour after being submitted. This can be relatively simple, such as asking what people might think about the topic of the video you posted, or what your own thoughts on that video are. You may also include further information on the topic of the video you posted for those who might want to further explore the topic or topics from your submission. However, starter comments that are lazy, such as, but not limited to, "Thoughts?", "What do you think?", "This seems questionable," or, "I disagree," are discouraged, and posts may be removed after OP is warned that they need to further elaborate on their opening comment if they do not do so after another hour has passed. Users whose submissions are removed, but who wish to appeal that action, may message the mods with their reasoning. We understand if, for example, right after you posted and were about to make your opening comment, that your wife were in labor, or that your house were on fire, for example, that you would have other priorities in mind than making such a comment, and not only will we be willing to hear you out for any reason you may have for not making an opening comment within an hour after posting, will allow you to have an additional hour to make such a comment on your post for an hour after acknowledging the Mods' approval of your appeal, though we do ask for some kind of proof regarding the circumstances as to why one might not be able to comment. I, myself, won't put any limit on that, if something else happens to come up after that approval goes through, you may appeal again, but I'm not speaking for the mod team as a whole in that case, I would just expect the same mercy to be given to me, so as long as OP makes an effort to ensure commentary will be given in a timely manner after a post might be removed, I'm willing to let them do so. That said, any post that lacks commentary an hour after being posted will stay removed until commentary is provided and a link the the post with commentary is sent to the Mods via Modmail. As I said, I don't speak for the Mod team as a whole in that regard, so while I would hope other mods might be as merciful, it's none of my business if they are not.

Unfortunately, Mods can't sticky comments made by OP, so we can't do anything to make sure that comment is immediately visible in more popular posts with more activity, so we ask that users who come across posts more than an hour old without some form of commentary by OP according to these guidelines report such posts, but we request they make sure there is a top-level comment by OP that follows these guidelines somewhere in the comment thread, even if it might have negative karma. Please report any posts where OP might leave a top-level comment that does not meet these guidelines, and we'll take appropriate action.

More importantly, though. I finally learned how to synchronize some aspects of the new.reddit sidebar with the old.reddit sidebar! They're far from identical at this point, since I don't know how to add all the text including partner subreddits and the like to new.reddit, but I did finally figure out how to add rules to the new.reddit sidebar, so now, all our formal rules visible in the old.reddit sidebar are now visible in the new.reddit sidebar! As a team of Moderators, I can't say we've come to a consensus as to whether we'd prefer users browse this sub on old.reddit as opposed to new.reddit, so I figured I'd make an effort to make things easier on users of the latter, though because I don't entirely know how to manipulate the sidebar in new.reddit like I do in old.reddit, I recommend users check out the old.reddit version of /r/SpaceVideos because our sidebar over there contains many links to partner subreddits, and I don't quite know how to integrate that with the sidebar in new.reddit. I did take the liberty of removing defunct links from the old.reddit sidebar, however, so make of that what you will


r/SpaceVideos Mar 23 '23

Rule 5 Will Be Enforced More Vigorously from Now On

9 Upvotes

My bad for not actually enforcing a rule of my own making. If I come across a front page post without commentary from OP, it will be removed.


r/SpaceVideos 2d ago

What is A Quasi-Moon? Meet Kamo’oalewa

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13 Upvotes

Did you know one of Earth’s quasi-moons is a chunk of our actual moon? 🌕

A quasi-moon is a space rock that can appear from certain perspectives to be orbiting a planet. Earth has a few of these, including Kamoʻoalewa, discovered in 2016 and named for an "oscillating celestial object" in Hawaiian. Scientists believe it may be a chunk broken off from the moon when an impact created the Giordano Bruno crater about 10 million years ago! So here's the full picture: a piece of our moon, orbiting the Sun, that just happens to look like it's orbiting Earth.


r/SpaceVideos 3d ago

Timeline of Mercury (past)

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3 Upvotes

A last video for the rocky planets


r/SpaceVideos 3d ago

Timeline of Mercury (Past)

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2 Upvotes

Here is one of my last video about the rocky planets (there may have future history ones)


r/SpaceVideos 3d ago

Geological History of Mars

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3 Upvotes

An another space video but this time with Mars. Also inaccurate and content mistakes.

Note : Mars may be the most studied planet in the solar system, water already dry up after 3.5-3Bya. It would be possible the planet was a icy surface with frozen water.

Link : https://www.youtube.com/watch?v=VymPB_GH-_c


r/SpaceVideos 3d ago

Venus Geological History (Timeline)

3 Upvotes

https://www.youtube.com/watch?v=12n3TpF3R7A

Here is my first video on astronomy. I animated it on videopad. Descriptions in the video.

Note : Venus may not have Liquid water at his beginning and even no life. The moon and the rings are speculatives because of the low planet's rotation.

Can content mistakes or inaccuracies, I am a beginner in this domain.


r/SpaceVideos 4d ago

Stars Are Orbiting Sagittarius A*!

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93 Upvotes

Did you know there are stars orbiting a black hole at the center of the Milky Way? 🌌

Astrophysicist Erika Hamden tells us about this star cluster that lives around Sagittarius A* and what it teaches us about the black hole. Scientists have been tracking these stars for decades, watching them complete full orbits. Those orbits are actually how we know the black hole is there, and researchers use them to measure its mass and pin down its exact location.

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.


r/SpaceVideos 3d ago

Future of the Earth

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2 Upvotes

Link : https://www.youtube.com/watch?v=E_1cqqh_flU

Here is a video abou the future of the Earth. How long will survive life on the planet ? Does the Earth will survives to the Red Giant Sun.

Note : I did this video quickly, but it's certain there will be few grammatical mistakes. I post it to show how I can evolve and like a lot scenarios about the future.


r/SpaceVideos 4d ago

The First Vehicle on the Moon Was Stranger Than You Think

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2 Upvotes

r/SpaceVideos 5d ago

100+ Meteors Per Hour During Perseids

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77 Upvotes

Up to 100 shooting stars per hour are about to light up the sky! 🌠

Active July 17 through August 24, the Perseid Meteor Shower hits its peak overnight August 12 to 13, when a completely new moon creates perfect viewing conditions. This year the Perseids also overlap with the Delta Aquariid meteor shower, stacking the odds in your favor for a sky full of streaks. Find dark skies, give your eyes time to adjust, and look up between midnight and dawn for the best show.


r/SpaceVideos 9d ago

NASA Discovers Puffy Planets Lighter Than Cotton Candy

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23 Upvotes

A pair of planets with less density than cotton candy has been discovered! 🪐

One of NASA’s telescopes found two gas giants that can be classified in the rare “Super Puff” category. Despite being about the same size as Jupiter, they are a dozen times less dense. There are only a handful of these planets that we are aware of, and it is even more rare that they were found in the same star system.


r/SpaceVideos 10d ago

See a Meteor Every 3 Minutes: Southern Delta Aquariid Shower

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8 Upvotes

You could see a shooting star every 3 minutes this summer! 

The Southern Delta Aquariid meteor shower is  active now through August 23, with it’s the peak activity during the early morning hours of July 31. Even better, it overlaps with the Alpha Capricornid Meteor Shower. The best views will be in the Southern Hemisphere and the southern United States. For the best chance of spotting meteors, head to a dark location away from city lights, let your eyes adjust, and look up.


r/SpaceVideos 12d ago

What Is a Rogue Planet?

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14 Upvotes

What is a rogue planet and how do they occur? 

Astrophysicist Erika Hamden explains how rogue planets are worlds that no longer orbit a star after being ejected from their planetary systems. Some may be several times more massive than Jupiter, and scientists think there could be countless rogue planets drifting through the darkness of interstellar space. These lonely worlds reveal that planet formation is a chaotic process.

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.


r/SpaceVideos 19d ago

I snuck a love note onto SES-8

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1 Upvotes

r/SpaceVideos 20d ago

Why The Moon Wasn't Supposed To Have Water

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1 Upvotes

For decades, scientists believed the Moon was completely dry. This video explores how Apollo samples, Clementine, Lunar Prospector, Chandrayaan-1, LCROSS, LRO, and SOFIA gradually revealed the presence of water on the Moon and transformed our understanding of lunar science.


r/SpaceVideos 21d ago

Fireworks Nebula: Light Echoes in Space

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13 Upvotes

Does this nebula violate the law of the speed of light? 🎆⭐️

Astrophysicist Erika Hamden explains that the“Fireworks Nebula” is a nebula that surrounds a binary star system, one of which occasionally puts out a ton of light in a nova explosion. In 1901, astronomers observed this for the first time and assumed the nebula was getting bigger faster than the speed of light. What was really happening was a “light echo” where the light bounces off existing structures. While this does give a cool firework effect, it does not break the law of the speed of light!

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.


r/SpaceVideos 24d ago

Exact Center of the Solar System Isn’t Always The Sun

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42 Upvotes

The sun isn’t always the exact center of our solar system. ☀️

In this Space Oddity, Erika Hamden explains what the barycenter of the solar system is, and how it may not always be inside of the Sun itself. The variations in the barycenter can be explained by the large masses of the outer giant planets!


r/SpaceVideos 23d ago

Who wants to grab a drink! Comment below #astronomy #stemeducation #stem #nasa #science #bartender

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1 Upvotes

r/SpaceVideos 27d ago

Fireball Meteor Shower: Alpha Capricornids

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21 Upvotes

Don’t miss fireballs streaking across the sky during the Alpha Capricornids! ☄️

Beginning on July 3rd and lasting until August 15th, this meteor shower is known for its high quality and intense fireballs. If you are in the Southern Hemisphere or southern US, you may see it overlapping with the Delta Aquariids. Peaking overnight on July 30th into the 31st, this shower is visible from anywhere in the world, so don’t miss it!


r/SpaceVideos 29d ago

NASA Races to Rescue Falling Space Telescope

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10 Upvotes

The race is on to save a falling orbital telescope! 

NASA is attempting a first of its kind space rescue mission to save the Swift Observatory before it falls back to Earth. The plan is to have Katalyst Space’s LINK spacecraft dock with Swift and boost it into a higher orbit. If successful, it could help launch an entirely new era of in-orbit satellite servicing.


r/SpaceVideos 29d ago

The Dance of the Stars: 20 Million Years of Real Stellar Motion (Gaia DR3 Data)

5 Upvotes

Full video here: https://youtu.be/9TpaoCQaVEY

I've created this visualization showing how the sky around us changes over 20 million years as the Sun travels through the galaxy.

Each star moves with its own velocity relative to the Sun, this creates fascinating perspective effects: clusters like the Hyades drifting close and then away again (between -1.5 and -0.5 Myr, low left of the video), periods where the sky is filled with bright stars in patterns we'd never recognize today, and stars that sit near the celestial poles for tens of thousands of years.

**Details:**

- Time span: ±10 million years

- 1 frame every 10,000 years

- Real data from Gaia DR3 + Hipparcos (ESA)

- Linear extrapolation of measured positions and velocities (accurate on this timescale)

This is the first in a series of astronomical visualizations focused on the Local Stellar Neighborhood and the Sun's journey. Feedback is very welcome!


r/SpaceVideos Jun 22 '26

Don’t Miss A Rare Micro Moon!

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13 Upvotes

A micromoon is arriving June 29th!? 🌕 

The full moon this month is going to be 7% smaller and 14% dimmer. This is because it will be at “apogee”, the furthest point in its orbit from Earth. That is about 13,900 miles further away than usual, so this is the opposite of a supermoon. Don’t miss it!


r/SpaceVideos Jun 17 '26

Don’t Miss 100 Meteors An Hour During Bootids Shower

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18 Upvotes

You could see up to 100 meteors per hour this month! 🌠

The Bootids are active now until July 2, and will peak on June 21. This meteor shower varies, with some years producing just a few meteors in an hour, and others getting up to 100 per hour! Scientists are unable to predict which version is coming, but if all goes well, skywatchers in the Northern Hemisphere could get a dazzling shower!


r/SpaceVideos Jun 17 '26

Do you think life could exist here !? #science #space #spacex #nasa #astronomy

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3 Upvotes