No contact with Mars’ rovers for the next month
The Sun is about going to cause a month-long break in communications with Curiosity and Perseverance, the two rovers on Mars.
This communications pause occurs every two years, when the orbits of Earth and Mars align with the Sun in between.
This holiday season coincides with conjunction — every two years, because of their different orbits, Earth and Mars are obstructed from one another by the Sun; this one will last from Dec. 27 to Jan. 20. We do not like to send commands through the Sun in case they get scrambled, so we have been finishing up a few last scientific observations before preparing Curiosity for its quiet conjunction break.
This is not a unique situation. Both rovers have gone through conjunction several times previously. The science teams will place the rovers in secure positions to hold them over during the break.
As for the orbiters circling Mars, it isn’t clear how much their operations will be impacted. The update at the link above makes no mention of them, and my memory says communications with them is less hampered, though reduced somewhat.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
The Sun is about going to cause a month-long break in communications with Curiosity and Perseverance, the two rovers on Mars.
This communications pause occurs every two years, when the orbits of Earth and Mars align with the Sun in between.
This holiday season coincides with conjunction — every two years, because of their different orbits, Earth and Mars are obstructed from one another by the Sun; this one will last from Dec. 27 to Jan. 20. We do not like to send commands through the Sun in case they get scrambled, so we have been finishing up a few last scientific observations before preparing Curiosity for its quiet conjunction break.
This is not a unique situation. Both rovers have gone through conjunction several times previously. The science teams will place the rovers in secure positions to hold them over during the break.
As for the orbiters circling Mars, it isn’t clear how much their operations will be impacted. The update at the link above makes no mention of them, and my memory says communications with them is less hampered, though reduced somewhat.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Sounds like we need a “Venus Equilateral” :-)
Wouldn’t it be terrible if communications were to return, and we’d find a note on one of them, saying, “Hi!!”
How about putting a relay at L4 or L5? Too expensive? Not enough benefit?
Stan Witherspoon, my thoughts approximately. SML4 or SML5 relays? or is that halo too fragile, anchored 1.5 AU / 0.1 e / 0.1 Earth mass?
F,
That note would only be terrible if it was written in Chinese.
“That note would only be terrible if it was written in Chinese.”
I am of the opinion that commercial access to space, and the tech needed to do it profitably, came along at the right time to reduce the likelihood of a World War with the Chinese bloc (including satellite states like Russia). Earth territory is important if that’s all you have to work with, but as the proliferation of both real and cosplay spaceports demonstrates, you don’t need all that much land to be a player overhead.
The ability to inexpensively access limitless territory may reduce pressure to acquire some the old-fashioned way. But space is like any other wasteland; not all parts are equally desirable. There are only so many profitable orbits and resource bodies to work with. Those oasii are just as desirable as any on Earth, and likely to generate as much conflict.