Uranus looms wellover 2.5 light-hoursaway from Earthtonight. In contrast, the moon - ournearestcelestial neighbor - resides only 1.3 light-secondsaway.
Providing a constant light during daylight hours the bottle bulbs are promoted as a better choice than candles and electric lighting that may have dangerous or faulty wiring and could cause fires.
To observe such a distant, faint object, scientists had to collect light through the telescopes over 37 hours, letting more and more light accumulate to see as deep as possible.