All this talk of temperature makes us more curious of how hot or how cold things are in the known universe. It’s a peculiar thing temperature. In your weather app it would say a certain degree, but then there’s a category that says, “feels like” this degree. Makes you wonder, what the temperature really is. Why is there a need to say “feels like” this degree? Why not just say that measure is the actual temperature.
In any case, the universe is made of many different kinds of matter. These matter have varying forms of temperature. The individual elements make up the lowest temperature. I believe it is helium with the lowest melting point of -272 C. That’s colder than your ex’s heart. Kidding aside, oxygen comes close at -218 C melting point. What’s even more fascinating is that the boiling of Oxygen is just relatively close to its melting point: -183 C.
When it comes to living things, the lowest temperature survived by one is -273 degrees Celsius by a rockstar invertebrate called the moss-pig or the water bear which looks exactly like it sounds like.
The lowest man-made temperature was achieved at MIT in 2003 at about half a billionth of a degree above absolute zero.
Now let’s talk about the other end of the spectrum–the hottest things in the universe. When we talk of hotness, we usually think of the sun. Yes, the sun is hot at 5,550 degrees Celsius, but it’s nowhere near as hot as the temperature of the universe at 10 to 35th degree seconds old. That’s 1,000,000,000,000,000,000,000,000,000 degrees Celsius. Now that’s hot.