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[@simulaverse](/creator/youtube/simulaverse)
"What if we Replace our closest star with Betelgeuse and make it go supernova - Universe Sandbox"  
[YouTube Link](https://youtube.com/watch?v=2K5WetEGHvg) [@simulaverse](/creator/youtube/simulaverse) 2025-06-07T21:26Z 196K followers, 1.1M engagements


"What if we make the Moon XXX times more massive - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=eXP-df2NFqg) [@simulaverse](/creator/youtube/simulaverse) 2025-07-11T20:39Z 196K followers, 607.5K engagements


"What if we delete the biggest planet from our solar system - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=kHJpIWoksKw) [@simulaverse](/creator/youtube/simulaverse) 2025-08-01T22:29Z 196K followers, 1.4M engagements


"What if we slam a Texas-sized asteroid into Earth - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=-nnP2SY7nzE) [@simulaverse](/creator/youtube/simulaverse) 2025-10-21T18:33Z 196K followers, 39.1K engagements


"What if we put Jupiter between Earth and Venus - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=1W7aOwUXFuI) [@simulaverse](/creator/youtube/simulaverse) 2025-08-19T18:53Z 196K followers, 517.6K engagements


"What if we make Earth the size of the Moon - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=4Y_rZIEjnEQ) [@simulaverse](/creator/youtube/simulaverse) 2025-10-02T18:57Z 196K followers, 275.4K engagements


"What if we added a pulsar to our solar system #simulator #solarsystem #universe #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=6aRk98idJ0Q) [@simulaverse](/creator/youtube/simulaverse) 2025-01-27T21:44Z 196K followers, 725.9K engagements


"What if we give Jupiter XX times its mass - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=7P2BCKBjqqI) [@simulaverse](/creator/youtube/simulaverse) 2025-08-05T18:36Z 196K followers, 5.5M engagements


"What if we replaced the Sun with the Milky Way's supermassive black hole - Universe Sandbox #space"  
[YouTube Link](https://youtube.com/watch?v=9DaEvtjLXvw) [@simulaverse](/creator/youtube/simulaverse) 2025-06-03T20:11Z 196K followers, 3.7M engagements


"What if we make the Moon fully habitable for humans - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=9xusPRH_cPQ) [@simulaverse](/creator/youtube/simulaverse) 2025-10-10T20:12Z 196K followers, 661.3K engagements


"What If All Planets Shared Earth's Orbit - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=B0fpibZ43CQ) [@simulaverse](/creator/youtube/simulaverse) 2025-06-02T17:44Z 196K followers, 3.4M engagements


"What if we dimmed the Sun by X% - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=Cc3DRRJxhB8) [@simulaverse](/creator/youtube/simulaverse) 2025-06-29T21:19Z 196K followers, 7.8M engagements


"What if we replaced the Sun with a better star #simulator #solarsystem #universe #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=CeLOKp9tuGE) [@simulaverse](/creator/youtube/simulaverse) 2025-01-30T23:51Z 196K followers, 3M engagements


"What if interstellar comet 3I/ATLAS hit the Moon - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=Hrp9xeWPyKU) [@simulaverse](/creator/youtube/simulaverse) 2025-09-23T19:24Z 196K followers, 631.9K engagements


"What if we replace our Moon with Mars's two moons - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=JrD2vHqk3m4) [@simulaverse](/creator/youtube/simulaverse) 2025-07-28T20:52Z 196K followers, 861.3K engagements


"What if we double the Moon's mass and move it twice as close - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=KGx-unQ7ZIY) [@simulaverse](/creator/youtube/simulaverse) 2025-10-16T19:24Z 196K followers, 138.1K engagements


"From Earth to Andromeda Galaxy - A Journey Through Space Engine"  
[YouTube Link](https://youtube.com/watch?v=KMeBEMSUJ-M) [@simulaverse](/creator/youtube/simulaverse) 2025-01-27T02:55Z 196K followers, 372.1K engagements


"What if Earth Orbited Like Pluto - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=MIOSzqHQPZs) [@simulaverse](/creator/youtube/simulaverse) 2025-07-08T22:02Z 196K followers, 508.9K engagements


"What if we turn Earth into a brown dwarf's moon - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=NYVyLx6u5XM) [@simulaverse](/creator/youtube/simulaverse) 2025-08-12T19:09Z 196K followers, 844.3K engagements


"What if Earth orbited Alpha Centauri - Universe Sandbox #spacesimulation #universesandbox #space"  
[YouTube Link](https://youtube.com/watch?v=Ta2TG5XXJls) [@simulaverse](/creator/youtube/simulaverse) 2025-04-16T16:20Z 196K followers, 8.4M engagements


"What if we turned Mars into a livable planet - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=a49fjWiivT8) [@simulaverse](/creator/youtube/simulaverse) 2025-06-13T20:40Z 196K followers, 6.4M engagements


"What if we replace the Sun with a millisecond pulsar - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=eQG-Om--Vno) [@simulaverse](/creator/youtube/simulaverse) 2025-07-23T21:09Z 196K followers, 1.7M engagements


"What If We Replaced Venus with the Smallest Star - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=euAObhYeLB4) [@simulaverse](/creator/youtube/simulaverse) 2025-10-06T19:56Z 196K followers, 487.2K engagements


"What if we moved Earth X% further from the Sun #simulator #solarsystem #universe #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=g-na5x0Kldk) [@simulaverse](/creator/youtube/simulaverse) 2025-01-24T21:09Z 196K followers, 7.9M engagements


"What if we replace the Sun with the smallest known star - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=gzH92DTaavM) [@simulaverse](/creator/youtube/simulaverse) 2025-08-17T19:18Z 196K followers, 1.1M engagements


"What if we slammed Europa into Earth - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=jObHMEd7OrY) [@simulaverse](/creator/youtube/simulaverse) 2025-09-18T19:14Z 196K followers, 1.8M engagements


"What if we give Earth a second moon - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=lOkzOMKu-2Y) [@simulaverse](/creator/youtube/simulaverse) 2025-09-27T18:15Z 196K followers, 266.9K engagements


"What if we place all planets between Earth and the Moon - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=p-_FCaQBF3s) [@simulaverse](/creator/youtube/simulaverse) 2025-07-25T20:50Z 196K followers, 9.8M engagements


"From Earth to the Most Distant Galaxy Ever Confirmed Space Engine"  
[YouTube Link](https://youtube.com/watch?v=tFW5Bf8DyEc) [@simulaverse](/creator/youtube/simulaverse) 2025-05-21T14:19Z 196K followers, 138.6K engagements


"What if Mars orbited where Earth does - Universe Sandbox #spacesimulation #space #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=v5Z63Bb9WX0) [@simulaverse](/creator/youtube/simulaverse) 2025-03-22T22:10Z 196K followers, 1.8M engagements


"What if we move Earth XX% closer to the Sun - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=-j7Ql5QrYBc) [@simulaverse](/creator/youtube/simulaverse) 2025-10-14T19:53Z 196K followers, 187.4K engagements


"What if Earth had two identical moons on opposite sides - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=DF2wOUWdFo0) [@simulaverse](/creator/youtube/simulaverse) 2025-07-04T21:13Z 196K followers, 10.3M engagements


"What if we delete all gas giants except Jupiter - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=Eg9fPNg00EE) [@simulaverse](/creator/youtube/simulaverse) 2025-09-28T19:10Z 196K followers, 473.1K engagements


"What if we slammed Pluto into Earth - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=HDaPbKZw33A) [@simulaverse](/creator/youtube/simulaverse) 2025-10-04T20:09Z 196K followers, 848.7K engagements


"What if we boost Earth's orbital speed by X% - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=Ks6vy4Ribgg) [@simulaverse](/creator/youtube/simulaverse) 2025-07-22T20:58Z 196K followers, 546.3K engagements


"What if we bring Enceladus to the Sun's habitable zone - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=OgLnziQTMzs) [@simulaverse](/creator/youtube/simulaverse) 2025-07-30T21:58Z 196K followers, 1.3M engagements


"What if we replaced Jupiter with the smallest known star #simulator #solarsystem #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=Sct7ivpOP-w) [@simulaverse](/creator/youtube/simulaverse) 2025-02-01T00:09Z 196K followers, 883.3K engagements


"What if we slam the biggest asteroid into Earth - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=VImf1ICq0Ac) [@simulaverse](/creator/youtube/simulaverse) 2025-09-02T18:45Z 196K followers, 10.2M engagements


"What if we put Earth in orbit around a gas giant - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=WNHyaspOhFg) [@simulaverse](/creator/youtube/simulaverse) 2025-09-09T18:32Z 196K followers, 488.1K engagements


"What if we replace the Moon with Europa - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=ZqKfMUmbuEM) [@simulaverse](/creator/youtube/simulaverse) 2025-08-15T19:26Z 196K followers, 4.2M engagements


"What if we delete all planets except Earth - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=gPzpIYSwF9A) [@simulaverse](/creator/youtube/simulaverse) 2025-10-12T18:53Z 196K followers, 440.8K engagements


"What if we gave Venus Earth-like characteristics #universesandbox #astronomy #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=kZwEs2LMxjs) [@simulaverse](/creator/youtube/simulaverse) 2025-02-12T20:02Z 196K followers, 483K engagements


"What if we give Earth Uranus's 97.77-degree tilt - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=qwzeHAH8O4Y) [@simulaverse](/creator/youtube/simulaverse) 2025-07-21T20:12Z 196K followers, 1.9M engagements


"What if Mercury became Earth's second moon - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=roZNM1F6-1E) [@simulaverse](/creator/youtube/simulaverse) 2025-06-04T18:57Z 196K followers, 677.7K engagements


"What if we replace Pluto with the hottest star - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=uE2Tg-UJI60) [@simulaverse](/creator/youtube/simulaverse) 2025-10-17T21:41Z 196K followers, 181.1K engagements


"What if we move Earth to orbit Procyon in its habitable zone - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=uX-NFCVwP-8) [@simulaverse](/creator/youtube/simulaverse) 2025-09-30T19:18Z 196K followers, 299K engagements


"What if we make the Moon orbit Earth every XX hours- Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=xoysn7K03JI) [@simulaverse](/creator/youtube/simulaverse) 2025-08-31T19:15Z 196K followers, 935.5K engagements


"What if Pluto became Earth's second moon - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=6eSde86EwZ0) [@simulaverse](/creator/youtube/simulaverse) 2025-03-30T18:26Z 196K followers, 564.8K engagements


"What if Earth orbited the most massive star in its habitable zone #universesandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=FT5k4Bcwm1M) [@simulaverse](/creator/youtube/simulaverse) 2025-02-18T00:10Z 196K followers, 1.1M engagements


"What If Earth Was Twice Its Size - Universe Sandbox #spacesimulation #universesandbox #space"  
[YouTube Link](https://youtube.com/watch?v=W_LnGj3OB_8) [@simulaverse](/creator/youtube/simulaverse) 2025-04-21T15:08Z 196K followers, 7.2M engagements


"what if we add a black hole and a white hole to our solar system #solarsystem #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=yml4WG4XD3U) [@simulaverse](/creator/youtube/simulaverse) 2025-01-26T01:04Z 196K followers, 2.5M engagements


"What If The Solar System's Largest Moon Orbited Where Earth Does Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=-lnszpO5hPI) [@simulaverse](/creator/youtube/simulaverse) 2025-06-21T20:43Z 196K followers, 12.7M engagements


"What If We Replaced the Moon With Another Earth - Universe Sandbox #spacesimulation #space"  
[YouTube Link](https://youtube.com/watch?v=1i_5u0u8S6Q) [@simulaverse](/creator/youtube/simulaverse) 2025-06-12T20:43Z 196K followers, 1.9M engagements


"Traveling from Earth to M87* The First Black Hole Ever Imaged Space Engine"  
[YouTube Link](https://youtube.com/watch?v=3PCU5Ldwm34) [@simulaverse](/creator/youtube/simulaverse) 2025-03-02T00:33Z 196K followers, 23.3K engagements


"What If We Replace Mercury with the Smallest Known Star - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=3hqiSgbsi7A) [@simulaverse](/creator/youtube/simulaverse) 2025-06-28T20:16Z 196K followers, 1.3M engagements


"What if Europa orbited where Earth does - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=9B_AwSIX1L0) [@simulaverse](/creator/youtube/simulaverse) 2025-04-30T16:13Z 196K followers, 2.9M engagements


"What if we put Earth in a binary star system - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=C9lyouzxhhQ) [@simulaverse](/creator/youtube/simulaverse) 2025-09-07T18:42Z 196K followers, 3.6M engagements


"What if Earth orbited UY Scuti - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=ECa0BoiuJS4) [@simulaverse](/creator/youtube/simulaverse) 2025-06-26T22:45Z 196K followers, 750.7K engagements


"What if we turn Jupiter and Saturn into stars - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=F_Ld5vdAUSA) [@simulaverse](/creator/youtube/simulaverse) 2025-09-03T20:05Z 196K followers, 528.4K engagements


"What if we move Titan to Mars's distance from the Sun- Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=H5VtWztKhjM) [@simulaverse](/creator/youtube/simulaverse) 2025-08-29T20:45Z 196K followers, 463.1K engagements


"What If Earth Orbited Sirius The Brightest Star in Our Sky - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=I7fZiym8e0Y) [@simulaverse](/creator/youtube/simulaverse) 2025-05-16T15:04Z 196K followers, 1.3M engagements


"What if Earth Had Two Suns - Universe Sandbox #spacesimulation #universesandbox #space #universe"  
[YouTube Link](https://youtube.com/watch?v=QTUc0Lp7VVY) [@simulaverse](/creator/youtube/simulaverse) 2025-06-09T21:21Z 196K followers, 1.2M engagements


"Traveling From Earth to the X Most Extreme Pulsars in the Universe Space Engine"  
[YouTube Link](https://youtube.com/watch?v=Sl2SQI5FggI) [@simulaverse](/creator/youtube/simulaverse) 2025-02-26T22:00Z 196K followers, 24.7K engagements


"What if we put Sagittarius A in the asteroid belt - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=Y2ci-djGhL0) [@simulaverse](/creator/youtube/simulaverse) 2025-08-22T20:30Z 196K followers, 3.1M engagements


"What if Earth was in a three-star system - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=aADmXagvHTg) [@simulaverse](/creator/youtube/simulaverse) 2025-06-18T22:20Z 196K followers, 1M engagements


"What if we put a black hole in our asteroid belt - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=ef3uDvYXF00) [@simulaverse](/creator/youtube/simulaverse) 2025-06-25T21:37Z 196K followers, 1.4M engagements


"What if we made Earth take XXX years to orbit the Sun - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=f1aH05-4jhA) [@simulaverse](/creator/youtube/simulaverse) 2025-09-16T19:20Z 196K followers, 527.4K engagements


"What if we give Earth Venus's tilt and retrograde rotation - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=fXnNPAzNa_4) [@simulaverse](/creator/youtube/simulaverse) 2025-08-25T20:30Z 196K followers, 283.4K engagements


"What if we replaced Jupiter with a brown dwarf - Universe Sandbox #spacesimulation #universesandbox"  
[YouTube Link](https://youtube.com/watch?v=ggnymdLRvYI) [@simulaverse](/creator/youtube/simulaverse) 2025-05-10T18:50Z 196K followers, 991.7K engagements


"What if we give the Moon its own moon - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=iHQHPEVC2Gk) [@simulaverse](/creator/youtube/simulaverse) 2025-07-14T21:32Z 196K followers, 2.9M engagements


"Traveling from Earth to Phoenix A the Largest Black Hole Ever Discovered Space Engine"  
[YouTube Link](https://youtube.com/watch?v=iOsLY8KbIyg) [@simulaverse](/creator/youtube/simulaverse) 2025-02-15T18:01Z 196K followers, 142.7K engagements


"What if we replace Mercury with a second sun - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=jGQsdFx7F1E) [@simulaverse](/creator/youtube/simulaverse) 2025-08-28T20:45Z 196K followers, 233.7K engagements


"Traveling from Earth to TON XXX One of the Most Massive Black Holes Ever Discovered Space Engine"  
[YouTube Link](https://youtube.com/watch?v=kOkIhrKG0cg) [@simulaverse](/creator/youtube/simulaverse) 2025-02-11T17:24Z 196K followers, 914.7K engagements


"What if we make Earth twice as dense without changing its size - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=mDs852wLVUs) [@simulaverse](/creator/youtube/simulaverse) 2025-08-14T19:21Z 196K followers, 859.4K engagements


"What if we merged all rocky planets into one - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=mlMwC9rTFtM) [@simulaverse](/creator/youtube/simulaverse) 2025-09-05T18:25Z 196K followers, 989.8K engagements


"What if we make the Sun XX% more massive - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=ugagZsJPhXU) [@simulaverse](/creator/youtube/simulaverse) 2025-08-07T19:19Z 196K followers, 2M engagements


"What if we add Earth to TRAPPIST-1's 7-planet system - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=vFET3O4TMW0) [@simulaverse](/creator/youtube/simulaverse) 2025-07-18T22:02Z 196K followers, 462.4K engagements


"What if we make Pluto orbit Earth backwards - Universe Sandbox #spacesimulation"  
[YouTube Link](https://youtube.com/watch?v=wYt-iML-2lE) [@simulaverse](/creator/youtube/simulaverse) 2025-07-17T20:58Z 196K followers, 1.3M engagements


"What if Earth and the Sun were the only objects in our solar system - Universe Sandbox #solarsystem"  
[YouTube Link](https://youtube.com/watch?v=zDoOCsr1aPA) [@simulaverse](/creator/youtube/simulaverse) 2025-05-12T21:04Z 196K followers, 2.8M engagements