Common foods that can be toxic.

 Common foods that can be toxic.

1. Cherry Pits

The hard stone in the center of cherries is full of prussic acid, also known as cyanide, which is poisonous. But there’s no need to freak out if you accidentally swallow one -- intact pits just pass through your system and out the other end. Avoid crunching or crushing pits as you nosh on your cherries.

Cyanide = Κυανίδιο 

2.                                                       Green Potatoes

The leaves, sprouts, and underground stems (tubers) of potatoes contain a toxic substance called glycoalkaloid. Glycoalkaloids make a potato look green when it’s exposed to light, gets damaged, or ages. Eating potatoes with a high glycoalkaloid content can cause nausea, diarrhea, confusion, headaches, and 

death

• glycoalkaloid= γλυκοαλκαλοειδές

Nasas' reaserch about Black Holes🕳

 WHAT IS A BLACK HOLE

• A black hole is anything but empty space. Rather, it is a great amount of matter packed into a very small area.The result is a gravitational field so strong that nothing, not even light, can escape. In recent years, NASA instruments have painted a new picture of these strange objects that are, to many, the most fascinating objects in space. In addition, black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos. Matter and radiation fall in, but they can’t get out.

 

HOW DO BLACK HOLES FORM?

• Primordial black holes are thought to have formed in the early universe, soon after the big bang. 

• Black holes were predicted by Einstein's theory of general relativity, which showed that when a massive star dies, it leaves behind a small, dense remnant core. If the core's mass is more than about three times the mass of the Sun, the equations showed, the force of gravity overwhelms all other forces and produces a black hole.

• Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space.

• Scientists think supermassive black holes formed at the same time as the galaxy they are in. The size of the supermassive black hole is related to the size and mass of the galaxy it is in.