Astronomers are able to identify chemicals in distant space with the use of spectral analysis. This breaks the light apart into a spectrum and find either emission lines or absorption lines and identifies which elements are present.
You look at the tiny markers stamped into each silver object. These have codes indicating purity and often also indicating where and when the object was made and sometimes, by which silversmith. If you don't find any markers, the object is not made of silver.
You can tell if something is made out of copper by its reddish-brown color and its high conductivity of electricity and heat. Additionally, copper is non-magnetic and is softer and more malleable than other metals like iron or steel.
First you must determine the volume of the gold object. This can be done by using a container with water that is on a scale. The weight of the container and water has to to be recorded or the scaled "zeroed out" with the water and container on it. Next you suspend the gold object with a fine thread in the water. For simplicity it is better to use grams for weight and cubic centimeters (1 cc= milliliter) for volume. The difference of weight caused by the suspended gold is equal to the weight of water with the same volume as the gold object. Since one cubic centimeter of water weighs one gram this ralationship allows for conversion from weight directly to volume. Now that you know the volume of the object you need to multiply it by the density of gold, 19.3 grams per cc. Now put the gold object on the scale and see how much it weighs. The calculated answer and the scale reading should be the same if it is made of gold.
I can't tell if you mean "crystal" as in "made of a crystalline material" or "crystal" as in "made of lead crystal, which is not technically a crystal at all". Take it to a jeweler. There's not any simple foolproof way a layman could tell.
When hydrogen burns, it combines with oxygen to form water (H2O).
spectrocity...absorption of select frequency of light ie spectrocity
blah blah black sheep
By using the habo space telescle to detect the object's velocity
What elements the star is made of.
A red shift in the light emitted by a star or galaxy indicates that it is moving away from us. By measuring the amount of red shift, astronomers can determine the speed at which the object is receding and use this information to study the expansion of the universe and the distance to the object.
Astronomers analyze the light reflected from comets with a machine, and can easily tell what major elements it is composed of.
Analysis of colors from objects in space can help astronomers determine the object's temperature, composition, and age. Different colors indicate different chemical elements present in the object, as well as its evolutionary stage. By studying the colors, astronomers can gain valuable insights into the physical properties and processes occurring in space.
A red shift indicates that an object is moving away from the observer. This is a result of the Doppler effect, where light waves are stretched as an object moves away, causing them to shift towards the red end of the spectrum. Astronomers can use red shifts to determine the speed and direction of an object's movement.
They get distant, but you have to see it.
What makes up the star or element.
Weight is due to gravitational forces between two objects. A single object inspace without another one reasonably nearby, or even in gravitational free-falltoward another object, is weightless. So you can not weigh an object in space.Determining the mass of objects in space is another matter.
The people you should ask are called astronomers who study astronomy.