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Forum:	Satellites - Robotic Probes
Topic:	[Discuss] UAE 'Hope' Emirates Mars Mission

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<table border=0 cellpadding=0 cellspacing=0 width="600"><TR><td bgcolor="#000000"><TABLE BORDER=0 cellpadding=4 border=0 cellspacing=1 WIDTH="100%"><TR bgcolor="#660000"><TD COLSPAN=2><CENTER><FONT SIZE="2" COLOR="#ffffff" FACE="sans-serif">T O P I C     R E V I E W</font></CENTER></TD></TR><TR bgcolor="#494949"><TD valign=top><FONT SIZE="2" FACE="sans-serif">Robert Pearlman</FONT></TD><TD><FONT SIZE="2" FACE="sans-serif"><BLOCKQUOTE><I>This thread is intended for comments and questions regarding the United Arab Emirates' (UAE) <A HREF="http://www.collectspace.com/ubb/Forum33/HTML/000734.html">Hope spacecraft and the Emirates Mars Mission</A>, the country's first interplanetary mission.</I></BLOCKQUOTE></FONT></TD></TR><TR bgcolor="#333333"><TD valign=top><FONT SIZE="2" FACE="sans-serif">Robert Pearlman</FONT></TD><TD><FONT SIZE="2" FACE="sans-serif">Orbital arrival set for 10:57 a.m. EST (1557 GMT) today (Feb. 9, 2021). Live coverage of Mars orbit insertion:<P><center><iframe width="400" height="225" src="https://www.youtube.com/embed/ae1pANFLPk0" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>

Robert Pearlman

Updates from the mission (via Twitter):

The command centre has confirmed that the fuel burn has begun.
The fuel burn will reduce the speed of the Hope Probe from over 121,000 km/h to approximately 18,000 km/h.
Success! Contact with the Hope probe has been established again. The Mars Orbit Insertion is now complete.

Headshot

Congratulations to the people of the UAE for Hope's orbiting of Mars. Of course real success will come when we see many peer-reviewed papers in future issues of scientific journals.

SkyMan1958

Congratulations to the people of the UAE. I hope the project does indeed kickstart an interest in learning science in the UAE.

SkyMan1958

I was quite surprised that Hope approached Mars at 72,000 mph. From what I remember from Perseverance, the rover hits the atmosphere at roughly 12,500 mph. In all the videos I’ve seen of Curiosity/Perseverance they are NOT shown doing any sort of a breaking maneuver in space, so in theory their approach to Mars speed should be roughly 12,500 mph. Obviously that’s a huge speed differential between the Hope and Perseverance spacecraft, yet they left Earth within 11 days of each other.

Does anyone know what is causing the huge differential in speed? One would assume that their flight plans would have been quite similar, particularly given all the US technical resources the UAE had access to to build the spacecraft.

canyon42

I suspect the disparity in speeds is a matter of different frames of reference. My guess would be that the speed cited for Perseverance is in relation to Mars and its atmosphere, while perhaps that for Hope is a heliocentric reference.

Robert Pearlman

From HH Sheikh Mohammed (via Twitter):

The first picture of Mars captured by the first-ever Arab probe in history, 25,000 km above the Red Planet's surface.

Robert Pearlman

From the Emirates Mars Mission (via Twitter):

The EMM transitioned from the capture orbit to science orbit with the completion of a 510 second burn of its thrusters. The Probe is now in its final orbit and ready for its 2 year science data gathering, the core aim of the mission. The science phase will commence on 14 April.

Robert Pearlman

From Sarah Al Amiri, UAE Minister of State for Public Education and Advanced Technology (via Twitter):

The Hope Mars Mission science team has unveiled a series of unique and ground-breaking observations of Mars' smaller moon, Deimos, using all three of its science instruments to "advance our fundamental understanding" of Mars' most mysterious moon.
The observations ware made possible during close flybys which saw Hope pass approximately 100km from Deimos. The observations were shared during a session at the European Geosciences Union's General Assembly, provide new insights into Deimos' makeup and structure. The new observations challenge the longstanding theory that Mars' moons are captured asteroids and instead point to a planetary origin.

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