Assertion: terrestrial planet's star | /r/CreatedBy | earth's motion
Facets:
value: around the sun
type: LOCATION
Source sentences:
text: In 1838, Friedrich Bessel successfully measured a stellar parallax, an apparent shift in the position of a star created by Earth's motion around the Sun, providing the first direct, experimental proof of heliocentrism.
text: The first was made in 1839 by German astronomer Friedrich Bessel, who successfully measured an apparent shift in the position of a star created by the Earth’s motion around the Sun (aka. stellar parallax).