Hal A. Weaver
Harold Anthony "Hal" Weaver, Jr. (born 1953) is an American astronomer, known for his research into the composition of solar system bodies including comets and Kuiper belt objects. Weaver attended Duke University as an undergraduate, and obtained his PhD from Johns Hopkins University, Johns Hopkins, where he researched the Astronomical spectroscopy, spectra of comets using data from the International Ultraviolet Explorer space telescope. Since 2002 Weaver has worked at the Applied Physics Laboratory. He is co-investigator on the Alice (spacecraft instrument), Alice ultraviolet imaging spectrometer on board the Rosetta (spacecraft), Rosetta mission to comet 67P/Churyumov–Gerasimenko, In the 1990s and 2000s he worked on the Far Ultraviolet Spectroscopic Explorer space telescope, conducted research into comets using the Hubble Space Telescope, and co-led the Pluto Companion Search Team that in 2005 discovered the second and third moons of Pluto (Nix (moon), Nix and Hydra (moon), ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

486958 Arrokoth
Arrokoth (minor-planet designation 486958 Arrokoth; provisional designation ), formerly nicknamed Ultima Thule, is a trans-Neptunian object located in the Kuiper belt. Arrokoth became the farthest and most primitive object in the Solar System visited by a spacecraft when the NASA space probe ''New Horizons'' conducted a flyby on 1 January 2019. Arrokoth is a contact binary long, composed of two planetesimals and across, that are joined along their major axes. With an orbital period of about 298 years and a low orbital inclination and eccentricity, Arrokoth is classified as a cold classical Kuiper belt object. Arrokoth was discovered on 26 June 2014 by astronomer Marc Buie and the New Horizons Search Team using the Hubble Space Telescope as part of a search for a Kuiper belt object for the ''New Horizons'' mission to target in its first extended mission; it was chosen over two other candidates to become the primary target of the mission. Name When Arrokoth ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]