Pressumably, they didn't have the high-precision devices required to measure those angles. You must consider that we are talking about extremely small angles - even the closest star has a parallax of less than one arc-second (1/3600 of a degree).
Among other things, the stellar parallax is evidence of the Earth's movement around the Sun. The fact that stellar parallax was not immediately detected is because the parallax angle is very small - less than one arc-second, even for the closest stars.
Because stellar paradox is so tiny that you cannot see it, and there were no precision instruments capable of measuring such tiny angles back then.
Stellar parallax is very small - for the nearest star it is less than one arc-second. Therefore it is hard to measure.
'Dark matter' and 'dark energy' have not been observed or proven yet.
Astronomers are unable to prove the existence of dark matter & dark energy.In fact astronomers have not yet proved most astronomical effects. Worm holes, black holes, or even the big bang. But proof in theories is almost impossible. The longer a theory stays intact is a sign of it's "proof" but some "sane" theories have been proven to be incorrect - "Einsteins biggest blunder".No scientist will say they have proved anything "astronomical" as it is almost impossible to prove anything without physical interaction.It's a bit like saying "I can prove that dogs live in the next street" based on only hearing their barks and not actually going there.
There are several speculative ideas in astronomy, which can't currently be proved - nor completely disproved. Some of these include wormholes; parallel universes; the possibility of time travel and faster-than-light travel.
Explain why the light is unable to reach the screen
Charon is so far away and so small that astronomers are unable to see it from Earth. It is therefore unsure whether Charon has craters but it is likely as every other planet and moon in the solar system has been bombarded by meteors in the past.
they couldn't measure small angles
'Dark matter' and 'dark energy' have not been observed or proven yet.
'Dark matter' and 'dark energy' have not been observed or proven yet.
its not bad dnt worry but its just to early
No. We would be unable to detect it but you can detect black holes(by xrays and light emmitted from material they are sucking up). You would be unable to detect it because if the two were moving away at a combined speed greater than that of light then light from the star could never reach the earth.
There are several reasons why a computer is unable to detect a pen drive. One common reason is that the computer does now know what drive letter to assign to the memory stick. One quick fix is to change the drive letter in the administrative tools of the control panel.
He was an unregistered animagus. He escaped by turning himself into his animal form which the Dementors were unable to detect.
Studies suggest that cats can not detect sweetness. In cases where a cat chooses to eat something sweet, like ice cream, scientists hypothesize that this is because of the temperature ans texture of the ice cream, not the flavor.
You can do HPV genotyping to know high risk and low risk type of HPV.
Wired Ethernet can physically detect collisions, WIFI can't.
Astronomers are unable to prove the existence of dark matter & dark energy.In fact astronomers have not yet proved most astronomical effects. Worm holes, black holes, or even the big bang. But proof in theories is almost impossible. The longer a theory stays intact is a sign of it's "proof" but some "sane" theories have been proven to be incorrect - "Einsteins biggest blunder".No scientist will say they have proved anything "astronomical" as it is almost impossible to prove anything without physical interaction.It's a bit like saying "I can prove that dogs live in the next street" based on only hearing their barks and not actually going there.
Bill Gates Partner Didn't Die.. He Left The Compony Though & He was Sick When He Left