fundamental distance measurements in astronomy come from trigonometric parallax, as applied in the stellar parallax method. As the Earth orbits the Sun...

astronomical unit (AU). Stellar parallax is so difficult to detect that its existence was the subject of much debate in astronomy for hundreds of years. Thomas...

as a basis for other distance measurements in astronomy forming the higher rungs of the ladder. Parallax also affects optical instruments such as rifle...

word parsec is a portmanteau of "parallax of one second" and was coined by the British astronomer Herbert Hall Turner in 1913 to simplify astronomers' calculations...

important step on the cosmic distance ladder. Parallax in astronomy Photometric parallax method Dynamical parallax Distance modulus Carroll, Bradley W.; Ostlie...

can be achieved. Parallax in astronomy Photometric parallax method Spectroscopic parallax Patrick Moore (2002). Philip's Astronomy Encyclopedia (revised...

a solar parallax of 8.6″. Although Huygens' estimate is remarkably close to modern values, it is often discounted by historians of astronomy because of...

1023/A:1005081918325. S2CID 189785021. Van Leeuwen, F. (2013). "The HIPPARCOS parallax for Polaris". Astronomy & Astrophysics. 550: L3. arXiv:1301.0890. Bibcode:2013A&A....

Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry...

sciences, achieving a high level of success in the second half of the first millennium. Astronomy has origins in the religious, mythological, cosmological...

In astronomy, aberration (also referred to as astronomical aberration, stellar aberration, or velocity aberration) is a phenomenon where celestial objects...

distance measurements in astronomy come from trigonometric parallax, as applied in the stellar parallax method. As the Earth orbits the Sun, the position of...

In astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the...

Ancient Greek astronomy is the astronomy written in the Greek language during classical antiquity. Greek astronomy is understood to include the Ancient...

Lunar Parallax: Estimating the Moon's Distance". Retrieved 29 February 2016. Wolfram Alpha widget – Current Moon Earth distance Portals: Astronomy Stars...

limited accuracy for individual measurements. Parallax in astronomy Spectroscopic parallax Dynamical parallax Mario Juric; et al. (2008). "The Milky Way...

not sufficiently steady. His unprecedented research program both turned astronomy into the first modern science and also helped launch the Scientific Revolution...

Short History of Astronomy. Creative Media Partners, LLC. pp. 357–358. ISBN 978-1-376-81951-9. Henderson, H. (1839). "On the parallax of α Centauri". Monthly...

of 3,550 K. Direct measurements of the parallax of UY Scuti published in the Gaia Data Release 2 give a parallax of 0.6433±0.1059 mas, implying a closer...

parallax. Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy &...

2M1207b using the moving-cluster method. Astrometry Parallax Parallax in astronomy Stellar parallax Cepheid Stars RR Lyrae Variable Stars Mamajek (2005)...

Epoch Equinox Halley, Edmond History of Astronomy Jyotish Kepler's laws of planetary motion Occultation Parallax Retrograde and prograde motion Sidereal...

of this parallax, the distance of the Moon as measured in Earth radii can be determined. For the Sun however, there was no observable parallax (we now...

starspots and coronal loops. stellar parallax stellar remnant submillimetre astronomy The subfield of astronomy that studies astronomical objects detectable...

The solar mass (M☉) is a standard unit of mass in astronomy, equal to approximately 2×1030 kg. It is approximately equal to the mass of the Sun. It is...

dissenting evidence. In 2012, Francis and Anderson proposed that a systematic effect on Hipparcos parallax errors for stars in clusters would bias calculation...

First Parallax Measurements". Astroprof. Retrieved November 12, 2007. Perryman, M. A. C.; et al. (1997). "The Hipparcos Catalogue". Astronomy and Astrophysics...

there were two slightly conflicting parallax measurements for Betelgeuse. The first, in 1991, gave a parallax of 9.8±4.7 mas, yielding a distance of...

1884, in London) was an English inventor, writer and utopian socialist who wrote Zetetic Astronomy: Earth Not a Globe under the pseudonym Parallax. His...

Cape (no sensible parallax); by Bessel (no sensible parallax). Scottish astronomer Thomas Henderson used his observations made in 1832–1833 and South...