What is the source of this information?
Q: What is the source of this information?
A: The sources for this information were the Yale Parallax Catalog [Y], Hipparcos [H], Soderhjelm 1999 [S], Tinney 1996 [T].
Q: How many star systems are within 5.0 parsecs (16.3 light-years) of the Sun?
A: There are 52 star systems within 5.0 parsecs (16.3 light-years) of the Sun.
Q: How many stars make up these 52 star systems?
A: These 52 star systems contain 63 stars in total.
Q: What type of stars make up most of these 63 stars?
A: 50 of these 63 stars are red dwarfs, which is by far the most common type of star in the Milky Way.
Q: Are there any other objects besides "true" stars identified in this list?
A: In addition to these "true" stars, scientists have identified 11 brown dwarfs and four white dwarfs.
Q: What is a white dwarf?
A: A white dwarf is an extremely dense collapsed core that remains after a star such as our Sun has exhausted all fusible hydrogen in its core and has slowly shed its outer layers.
Q: How bright must a star be to be visible to the naked eye from Earth?
A: A star must be 6.5 apparent magnitude or brighter to be visible to the naked eye from Earth.
