Mars and Nuclear Science
Welcome to the planets where you will find nothing but the Ice Caps and Martain Wastelands, why? because
I was too lazy to add The Moon, which should of been the first biome I added but nope. You can go to Mars by
finding space rock underground, and Processing it into Refined Space Rock using a Stonecutter, then getting titanium to build a chunk, finnaly putting 2 Refined Space Rock on top and right-clicking the top. Once
you're on Mars, find Uranium Ore, craft a Nuclear Circuit and then a Nuclear Core, Using your Nuclear Core craft Nuclear Casing. Once you have Nuclear Casing, mess with the nuclear blocks, build a Nuke to get revenge, Mess with a plutonium core, use that complex nuclear storage, ect, ect.
Guns and Bullets
Get a rusty chunck, which requires LOTS of copper, or you can disentagrate it. Craft a Acidic Disentagrater using acid and an iron block to make less rusty chuncks but in a easier way. But you need acid first so disentegrate Blaze Rods and water to create acid. Finnaly with a rusty chunck craft a bullet, craft a magazine, and most importantly craft a Gun. You can also craft Pump Blasters which are basically shotguns.
Time Travel
First craft a computer, then in the deep underground you can find Ancient Rock, mining them gives you Broken Zircons. Using 5 Broken Zircons you can craft a Zircon. You need Zircons and a computer to craft a Time Machine, which when redstone powered, and right-clicked Travels you back in time to the Carboniferous, along with the Devonian, Silurian, Cretaceous, Cryogenian, and Arcean.