34) Which of the following methods has led to the most discoveries of massive planets orbiting near their parent stars?
31) The core of the Sun is
31) The core of the Sun is
30) A rocky leftover planetesimal orbiting the Sun is
30) A rocky leftover planetesimal orbiting the Sun is
42) A planet is detected via the Doppler technique. The symm…
42) A planet is detected via the Doppler technique. The symmetry-shape of the periodic stellar velocity pattern tells us
27) What is the Sun made of?
27) What is the Sun made of?
47) What happens to energy in the convection zone of the Sun…
47) What happens to energy in the convection zone of the Sun?
40) Halley’s comet is named after the English scientist Edmu…
40) Halley’s comet is named after the English scientist Edmund Halley because he
11) What is the age of the oldest known stromatolites, which…
11) What is the age of the oldest known stromatolites, which indicate microbial life on Earth?
17) Of the following types of star, which is most likely to…
17) Of the following types of star, which is most likely to have planets capable of supporting life?
20) Which of the following statements about ozone (in Earth’…
20) Which of the following statements about ozone (in Earth’s stratosphere) is **not** true?