That Startup Show episode two is here and this week we are talking all things SpaceTech!

Once the reserve of government agencies, space exploration is becoming more open than ever thanks to entrepreneurs and startups driving innovation.

Space tourism, robotics and nano-satellites are all growing areas of space investment, but will we see the stuff of science fiction become real in our lifetime?

Once confined almost entirely to seafaring vessels, mutinies were later co-opted by writers of all sorts of science-fiction. We've seen them in everything from Star Trek to Star Wars, but one real life mutiny has actually occurred in space. So what did the mutineers do? They turned off all the comms for a day and watched the world go by, literally.

iOS: So you’re running out of space on your iPhone. Perhaps you’ve been unable to download that new movie you purchased to your device because there’s no room. Maybe your iPhone has popped up the dreaded “Storage Almost Full” warning.

However you were notified that you were running low on space is irrelevant: Your iPhone is filling up and you should probably look into that sooner, when it’s less critical to do so, than at a later point when you really need to do something and can’t.

Space: the final frontier. At this point it feels inevitable that humans will end up living and travelling in space somehow. One day it might be entirely unremarkable for humans to die in space - but as of 2018 only three people have passed away outside the limits of planet Earth.

My kid is home from school while I’m writing this, but he’s been busy at a computer across the room for I think a full hour now. And every couple seconds he says: “WOOOOOOW that is like the COOLEST thing I have EVER SEEEEEN! Oh my OH WOW!”

If you want to have a Mac that's as free from garbage and stray files as you can get, I recommend giving CleanApp a try. The app runs a background process that keeps track of everything an app dumps on your system when you're installing it. When it's time to remove said app, this ensures that CleanApp takes everything off your system that shouldn't be there.

Windows: I'm sitting in Las Vegas as I type this, and little makes you want to launch yourself off the face of the Earth faster than running into a group of loud, yelling bros looking for that next sweet bar where they can fill up on Coors Light.

Windows: Most computer geeks know about WinDirStat, an incredibly useful utility that shows which folders and files are taking up so much room on your drive. It's a must-have app, because you'll be surprised - heck, I've been surprised - how many times you might find some random, triple-buried folder on your desktop that's using an unseemly amount of space.

This one's almost a cop-out, since all Windows users should know about WinDirStat by now. This app has been out for nearly 15 years, and it's one of the most helpful tools you can use to clean up your hard drive.

Elon Musk's SpaceX will be launching flight 50 for the Falcon 9 tonight with a payload of Spain's Hispasat satellite. That satellite weighs about 6 ton and is the size of a bus, according to Musk, and will be the largest satellite SpaceX has flown yet.

You can catch the livestream right here!

Earlier this month Elon Musk's SpaceX successfully launched Falcon Heavy, the company's most powerful rocket yet. Inside was a red Tesla Roadster sports car with built-in cameras for capturing what it sees as well as a copy of Isaac Asimov's science fiction book series Foundation, and a plane engraved with 6,000 SpaceX employee names. The car's destination: Mars.

SpaceX has now launched the most powerful spacecraft since the Apollo era – the Falcon Heavy rocket – setting the bar for future space launches. The most important thing about this reusable spacecraft is that it can carry a payload equivalent to sending five double-decker London buses into space – which will be invaluable for future manned space exploration or in sending bigger satellites into orbit. But what about the environmental impact?

Valentina Tereshkova worked at a textile mill as a teenager and began learning to parachute in her early 20s. As the space race between the US and the Soviets hastened, she applied to be an astronaut. On June 16, 1963, she climbed into a tiny capsule that would make her the first woman to ever be launched into space. Then she proclaimed: “Hey sky, take off your hat. I’m on my way!”

What a badass.

Hopefully you never find yourself in a situation where you have to engage with someone who believes in a flat Earth. On the off chance that you do, don't go in unprepared! Here's some hard ammunition you can use to thoroughly debunk them.

Brief news items of note for Lifehacker readers, including: South Australia have a good chunk of money for their space program, Animal Crossing is coming to mobile phones, makeup tutorial video absolutely terrifies me.

Brief news items of note for Lifehacker readers, including: Where to build a colony on the moon, Call of Duty implied assault scene altered in Australia, Canberra breeds more boys than girls.

Google added over 500,000 images to Google Maps yesterday taken by spacecraft, many of which were taken by Cassini, which was launched in space 20 years ago.

Recently, my colleagues had a go at ranking the planets. But it was mostly incorrect. After extensively researching and writing about our solar neighbourhood, I feel I'm fairly qualified to take a stab at ranking these bad boys once and for all.

While you wait seven years for America's next total solar eclipse, check out the New York Times calendar of astronomical events. Subscribe and never miss another meteor shower, rocket launch, or solstice.