Editing 2000 in science (section)

==Astronomy and space exploration==
[[File:2000May04-conjunction.png|240px|thumb|Conjunction of planets, Moon, and Sun on May 4, 2000]]
* May 4 – A rare [[astronomical conjunction]] occurs on the [[new moon]] including all seven of the traditional [[celestial bodies]] known from ancient times until the discovery of [[Uranus]] in 1781; this conjunction consists of the Sun and Moon, [[Mercury (planet)|Mercury]], [[Venus]], [[Mars]], [[Jupiter]] and [[Saturn]].
* July 14 – [[Bastille Day solar storm]]: A powerful [[solar flare]] causes a [[geomagnetic storm]] on Earth.<ref>{{cite journal|title=The Bastille Day (14 July 2000) event in historical large sun-earth connection events|date=January 2001|doi=10.1023/A:1014273227639|url=https://www.researchgate.net/publication/226083577|access-date=2021-01-02|last1=Watari|first1=Shinichi|last2=Kunitake|first2=Manabu|last3=Watanabe|first3=Takashi|journal=Solar Physics|volume=204|pages=425–438|bibcode=2001SoPh..204..425W|s2cid=117394988}}</ref>
* August 10 – Publication of the [[M–sigma relation]] in ''[[The Astrophysical Journal]]''.
* November 2 – [[Expedition 1]] to the [[International Space Station]] begins.<ref>{{Cite news|date=2000-10-31|title=First crew starts living and working on the International Space Station|publisher=European Space Agency|url=https://www.esa.int/Our_Activities/Human_Spaceflight/International_Space_Station/First_crew_starts_living_and_working_on_the_International_Space_Station|access-date=2021-01-24|archive-date=2018-12-17|archive-url=https://web.archive.org/web/20181217064333/http://www.esa.int/Our_Activities/Human_Spaceflight/International_Space_Station/First_crew_starts_living_and_working_on_the_International_Space_Station|url-status=live}}</ref>