NASA Postpones Dawn Spacecraft Launch
Saturday's scheduled launch of NASA's Dawn spacecraft aboard a United Launch Alliance Delta II rocket has been postponed 24 hours.
A lightning advisory early Thursday interrupted fueling of the Delta II second stage rocket. Also, the temperature of the vehicle's second stage was too warm for the fueling process to begin. However, the fairing temperature has been lowered so that another attempt can be made Friday, July 6, pending acceptable weather.
Dawn's launch countdown dress rehearsal is now scheduled for Friday. The launch window on Sunday, July 8, extends from 4:04 p.m. to 4:33 p.m. EDT.
Weather for launch still may be an issue with a 60% chance of it not meeting launch criteria on Sunday.
The Dawn mission science briefing, scheduled for Friday, will be held as planned at 1 p.m. The pre-launch news conference is scheduled for 1 p.m. Saturday, July 7, following the Launch Readiness Review.
Source: NASA
-
From lemons to lemonade: Reaction uses carbon dioxide to make carbon-based semiconductor,
33 comments
-
Thioridazine kills cancer stem cells in human while avoiding toxic side-effects of conventional cancer treatments,
3 comments
-
SpaceX private rocket blasts off for space station (Update),
42 comments
-
Landmark calculation clears the way to answering how matter is formed,
55 comments
-
Research team claims to have found evidence Lake Cheko is impact crater for Tunguska Event,
18 comments
-
Distance of planets from stars and revolution
13 hours ago
-
revamping general concept and cosmological principle
May 25, 2012
-
Transiting Exoplanet Light Curve
May 25, 2012
-
Math behind Theoretical Physics
May 24, 2012
-
Do we know whats at the center of galaxies yet?
May 23, 2012
-
Structure of the Milky Way?
May 20, 2012
- More from Physics Forums - General Astronomy
More news stories
Yale study concludes public apathy over climate change unrelated to science literacy
Are members of the public divided about climate change because they don't understand the science behind it? If Americans knew more basic science and were more proficient in technical reasoning, would public consensus match ...
13 hours ago |
4.8 / 5 (6) |
30
|
Land and sea species differ in climate change response: study
(Phys.org) -- Marine and terrestrial species will likely differ in their responses to climate warming, new research by Simon Fraser University and Australia’s University of Tasmania has found.
11 hours ago |
4 / 5 (5) |
9
|
10 million years needed to recover from mass extinction
It took some 10 million years for Earth to recover from the greatest mass extinction of all time, latest research has revealed.
Space & Earth / Earth Sciences
13 hours ago |
4.2 / 5 (5) |
5
|
Sophisticated simulations predict future warming
The chances of our planet being hit by a global warming of 3 degrees Celsius by 2050 is as likely as it being hit by an increase of 1.4 degrees, new research shows. Presented in the journal Nature Geoscience, the British study ...
Space & Earth / Earth Sciences
May 22, 2012 |
3.8 / 5 (11) |
51
Kyoto Protocol architect 'frustrated' by climate dialogue
UN climate talks are going nowhere, as politicians dither or bicker while the pace of warming dangerously speeds up, one of the architects of the Kyoto Protocol told AFP.
May 23, 2012 |
3.4 / 5 (8) |
44
Stunning image of smallest possible five-ringed structure
Scientists have created and imaged the smallest possible five-ringed structure – about 100,000 times thinner than a human hair – and you'll probably recognise its shape.
'Unzipped' carbon nanotubes could help energize fuel cells, batteries
Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at ...
Change in developmental timing was crucial in the evolutionary shift from dinosaurs to birds: study
At first glance, it's hard to see how a common house sparrow and a Tyrannosaurus Rex might have anything in common. After all, one is a bird that weighs less than an ounce, and the other is a dinosaur that ...
Computer model used to pinpoint prime materials for efficient carbon capture
When power plants begin capturing their carbon emissions to reduce greenhouse gases – and to most in the electric power industry, it's a question of when, not if – it will be an expensive undertaking.
T cells 'hunt' parasites like animal predators seek prey, study shows
By pairing an intimate knowledge of immune-system function with a deep understanding of statistical physics, a cross-disciplinary team at the University of Pennsylvania has arrived at a surprising finding: T cells use a movement ...
Browser wars flare in mobile space
The browser wars are heating up again, but this time the fight is for dominance of the mobile Internet.
