The predominant element in the Sun is hydrogen, and then helium: by mass, it is 70% hydrogen, 28% helium, 1.5% carbon, nitrogen and oxygen, and 0.5% all other elements.
helium and hydrogen
UV from sun could be detected using UV sensors. The technology has been that advanced.
Manmade elements. These have traditionally been considered to be: Technetium, Promethium, Neptunium, and all elements beyond Neptunium. However trace levels of several of these have since then been detected naturally.
Scientists know of 91 "natural" elements and several additional elements that have been created in the laboratory. It's likely that many of the "artificial" elements do exist, at least momentarily, in the aftermath of supernova explosions where even exceptionally heavy elements are thought to be created, but with half-lives that cause them to decay to nothingness before they actually get far enough from the star to be detected.
As strange as it may seem, yes water has been detected on the Sun. Actually what was detected is 'steam' over a particularly cool sunspot where the temperatures were only about 1000 K or so.....
No, camera radiation has not been detected in the area.
Very low. Such a companion would have been detected by now, even if only through its gravitational effects.
It is theorized that Pluto has a thin temporary atmosphere when it is closest to the Sun, but no wind has ever been detected or observed.
A failure has been detected in the safety restraint system.A failure has been detected in the safety restraint system.
The human body is composed of approximately 60 different chemical elements, with the most abundant being oxygen, carbon, hydrogen, and nitrogen. However, all known stable and radioactive elements have been detected in trace amounts in the human body.
The Sun is not made of Rocks or Iron or Sand or any heavy element. There are certainly a small fraction of heavy nuclei in the Sun, but that is a very small part of the make up of the Sun. (Scientists have a very detailed understanding of the elements in the Sun since these can be detected as absorption lines in the spectrum of light from the Sun.) Overwhelmingly the Sun is made of two gases, Hydrogen and Helium. It is the fusion of hydrogen into helium that is the nuclear reaction that powers the Sun and gives us sunlight.
Plenty of signals have been detected from space - but none have been inferred to have come from an intelligent source. (IE Aliens)