How big is a Parsec?
Answer: 3.1x10^16m
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Astronomy 101
- In the formation of our Galaxy
- The high-speed motion of gas and stars near the Milky Way Galaxy's centre is explained by
- The period-luminosity relationship is a crucial component of
- A nova involves
- In a young star cluster, when more massive stars are evolving into red giants, the least massive stars are
- Very young stars in small clusters of 10-100 members are known as
- The event that marks the end of a star's evolutionary life before becoming a white dwarf is
- The helium flash occurs
- What is the single most important characteristic in determining the course of a star's evolution?
- 21-centimeter radiation is important because?
- Stellar parallax is used to measure the
- Wien's law tells us that the hotter an object, the _____ the peak wavelength of its emitted light.
- When we observe stars near the centre of the Milky Way Galaxy, we detect light that was emitted from those stars about
- What two observations allow us to estimate the Galaxy's mass?
- Compared to stars like the Sun in the disk of the Milky Way, stars that populate the extended spheroidal halo of the galaxy were born
- The primary reason that massive O-type stars are not found in the galactic halo is that they are
- Kepler's Third Law does NOT apply to the motion of
- Which of these is not a typical part of our Galaxy's spiral arms?
- Our Sun is located in the Milky Way Galaxy
- The location of the galactic centre was identified using
- A nova involves
- A white dwarf can explode when
- A key feature of globular clusters is that they have
- If two stars are on the main sequence, and one is more luminous that the other, we can be sure that the
- Astronomers determine the age of star clusters by observing