i think because of pollution and lots of light
Precipitation formsProduction of bubblesTemperature changeColor change
There are some ways. It is happening mostly by Respiration.
Since you can't see a black hole, scientists use a method called gravitational lensing to detect black holes. Since black holes warp space-time, the light that travels near a black hole is bent, like how a magnifying glass warps the object a little at the edges. Scientists look for unusual distortions of light caused by this effect to look for black holes.
Sound cannot travel through the thin atmosphere of Mars in the same way it does on Earth, so any sounds would be much quieter and muffled. However, there are instruments on Mars missions that can detect vibrations or low-frequency sounds. So, while you wouldn't really "hear" sound as we do on Earth, there are ways to detect vibrations on the red planet.
There are two ways of finding black holes. They can look for the effects that their gravity has on nearby objects and they can look for X-rays emitted by matter about to fall into them. A major challenge is that black holes themselves do not emit any light, making them impossible to detect directly.
the astronomers use Absolute magnitude
speed of light
Astronomers can overcome the distortion of starlight caused by Earth's atmosphere by using adaptive optics, which involves real-time adjustments of telescope mirrors to compensate for atmospheric turbulence. Another method is placing telescopes in space, such as the Hubble Space Telescope, which eliminates atmospheric interference altogether, allowing for clearer and more detailed observations of celestial objects.
Read it
microlensing
You can detect alcohol in the body with a blood test. You can also detect alcohol in the body, like police officers, by using a breathalyzer test.
If the weapons are tested underground nothing. However seismographs can detect such tests. If the weapons are tested above ground there will be fallout. However there are many other ways now to detect above ground testing, including satellite images that capture the flash of light.
Baking powder, baking soda, or iodine.
I could only find two...your ears and a microphone
there are pens that can detect color change if there real
u can hear it, u can feel, and u can see it.
Precipitation formsProduction of bubblesTemperature changeColor change