Credit & Copyright: Richard Bosman
Explanation:
Does Mars always appear the same?
No.
As both Earth and Mars orbit the Sun, the
apparent angular size
of Mars changes as viewed from the Earth.
Pictured above from
Enschede,
Holland,
Mars was captured in 2007 and 2008 with 30 separate images,
all taken with the same magnification.
When Earth and
Mars are on opposite sides of the Sun,
Mars appears relatively small.
Conversely, when Earth and Mars are near each other,
Mars looms large and bright.
The largest Mars has appeared in recent history was the
opposition of August 2003.
Since Mars is always more distant from the Earth from the Sun,
Mars never shows a crescent phase to Earthlings.
Visible also in the above images are the
north polar cap of Mars,
dark and light soil, clouds, and, in the early images, a global
dust storm.
The next opposition, when Earth again passes near to Mars, will occur in early 2010.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
Mars - angular size - Марс - противостояние
Публикации со словами: Mars - angular size - Марс - противостояние | |
См. также:
Все публикации на ту же тему >> | |
