We don’t really know. We can define what it is as a field of influence, because we know how it operates in the universe. And some scientists think that it is made up of particles called gravitons which travel at the speed of light.

Six weighty facts about gravity

• Gravity is by far the weakest force we know.
• Gravity and weight are not the same thing.
• Gravity makes waves that move at light speed.
• Explaining the microscopic behavior of gravity has thrown researchers for a loop.
• Gravity might be carried by massless particles called gravitons.

Blood feels gravity, too. Higher blood pressure in the head raises an alarm: The body has too much blood! Within two to three days of weightlessness, astronauts can lose as much as 22 percent of their blood volume as a result of that errant message. This change affects the heart, too.

Although Newton’s theory has been superseded by Albert Einstein’s general relativity, most modern non-relativistic gravitational calculations are still made using Newton’s theory because it is simpler to work with and it gives sufficiently accurate results for most applications involving sufficiently small masses.

1.62 m/s²

Experts say there’s still no evidence that lunar gravity can affect sleep, and that light in some way is likely causing this effect.

The 8 Best Teas for Menstrual Cramps

1. Red raspberry leaf tea. Red raspberry leaf tea is made from the leaves of raspberry plants.
2. Ginger tea. Ginger tea is made from the pungent, spicy ginger root.
3. Chamomile tea. Chamomile tea is made of dried chamomile flowers and has a mild, floral taste.
4. Peppermint tea.
5. Cinnamon tea.
6. Green tea.
7. Thyme tea.
8. Oolong tea.

The moon is a feminine symbol, universally representing the rhythm of time as it embodies the cycle. The phases of the moon symbolize immortality and eternity, enlightenment or the dar k side of Nature herself.

29.5 days