Ultraviolet light. Light therapy boxes should be designed to filter out harmful ultraviolet (UV) light, but some may not filter it all out. UV light can cause skin and eye damage. Look for a light therapy box that emits as little UV light as possible. If you have concerns about light therapy and your skin, talk to your dermatologist.
The reason behind it has to do with the pretty, little planet called Venus. She will be entering her rare retrograde phase on July 25 th, 2015. Astrologically, a Venus Retrograde period is one of the most important times for matters of love. It happens every 18 months to two years and every time Venus does her backwards dance, relationships end up being the topic on everyoneâs minds. Karma also plays into this period, which makes it all the more special.
For starters, it spins in the opposite direction from most other planets, including Earth, so that on Venus the sun rises in the west. Not that it happens often: a day there lasts a little more than 243 Earth-days, actually making it longer than a Venusian year, which is only about 224 Earth-days long. Many scientists believe that the long days are a result of the sun's strong pull on the planet. (Mercury, which is even closer to Sol, has fairly long days as well: three for every two Mercury-years). But scientists are still puzzled by Venus's retrograde, or backward, rotation.