Sentences with phrase «red object in the distance»

Trying to aim at a red object in the distance causes unnecessary eye strain as you're fighting the physics of the ballistics to try and get a hit.

Not exact matches

More accurate distances between the most common type of «planetary nebulae» and the Earth can be estimated simply with three sets of data: firstly, the size of the object on the sky taken from the latest high resolution surveys; secondly, an accurate measurement of how bright the object is in the red hydrogen - alpha emission line; and thirdly, an estimate of the dimming toward the nebula caused by so called interstellar - reddening.

Unfortunately, if distance measurements using this method are reported in the popular press, usually only the determined distance is given, not the measured red shift nor the used cosmological parameters; this can lead to the result that at different places, different distances are reported for the same object and the same study.