It's not a star, It's a planet: Venus! Beautiful, isn't it? Diego
The bright spot near the moon tonight is likely a planet like Venus or Jupiter. Planets are often visible near the moon, appearing as bright points of light in the night sky.
In January 2009, the bright object near the moon in the western sky was likely the planet Venus. Venus is often visible in the evening sky and can appear as a bright point of light near the moon. This celestial pairing is a beautiful sight to observe.
Since the Moon moves across the sky about 12 degrees per night, there will be no bright star near the Moon "every night". Last night (September 11, 2009) the Moon was fairly close the Betelgeuse, the red giant star at the shoulder of Orion. Tonight, September 12, 2009, the Moon will be very near the planet Mars. Both have a similar reddish color to them.
The bright star near the Moon on January 11, 2010 is Antares.
On 30th July 2017 the bright planet near the Moon just after sunset is Jupiter. Mercury is also visible in the lower part of the sky.
Probably you saw the moon next to a planet, or another bright star. There are some bright stars - like Antares - which are near the Ecliptic.
It could be Mars, as it is commonly visible as a bright reddish object in the night sky and can sometimes appear near the Moon. Another possibility is a red planet or star that is particularly bright and close to the Moon from our perspective on Earth.
At different times the various planets look to be near the moon. So sometimes when you see something very bright near the moon, it is a planet. The four main planets that look bright are Venus, Mars, Jupiter and Saturn, so when you see something near the moon, it is one of those four. You can use lots of different websites which will tell you what is in the sky at the moment and what looks to be near the moon. One of those websites is in the link below.
The star closest to the moon changes constantly as the moon moves through the sky. One star that is often seen near the moon is Aldebaran, which is a bright star in the constellation Taurus.
Since the moon's orbit is not synchronized with Earth's orbit, which stars appear near the moon will vary. If the "star" was especially bright or did not appear to twinkle it was likely a planet rather than a star. If it was red it was probably Mars. If it was the brightest object in the sky other than the moon itself it was probably Jupiter or Venus. The moon, Venus, and Mars all appeared near each other in February 2015.
The moon is simply a large lump of rock and therefore produces no light of its own. The moon is visible in the sky due to sunlight being reflected off the moon's surface, in fact on nights where there is a full or near full moon it can actually be bright enough to cast a shadow
In September 2009, the star or planet that appeared near the moon in the southern sky would likely have been the planet Jupiter. Jupiter is often visible to the naked eye and appears as a bright object near the moon in the night sky.