August 30th 2012 - 10:00 UTC

Videos of the launch and separation is now available at the bottom of this page.

August 30th 2012 - 09:35 UTC

RBSP Spacecraft B Separation! The second and final probe has separated from the upper stage marking an end to their trip into space.

August 30th 2012 - 09:35 UTC

Centaur is spinning up again ahead of separation of the final probe.

August 30th 2012 - 09:25 UTC

Centaur is now positioning for the other Spacecraft B separation.

August 30th 2012 - 09:23 UTC

RBSP Spacecraft A Separation! The first of two RBSP probes has separated from the Centaur upper stage. The other Spacecraft, B, Will separate in around 12 minutes.

August 30th 2012 - 09:19 UTC

The Centaur has shut down on time, The Centaur is now reorienting to the spacecraft separation altitude.

August 30th 2012 - 09:15 UTC

The Centaur has ignited for it's second burn.

August 30th 2012 - 09:05 UTC

Now under 10 minutes to the ignition of the Centaur upper stage for the second burn which will last nearly 5 minutes.

August 30th 2012 - 08:19 UTC

MECO. The Centaur has shut down on time. There will be a near 56 minute coast phase before a final burn before spacecraft separation.

August 30th 2012 - 08:13 UTC

This first Centaur burn is performing as expected.

August 30th 2012 - 08:09 UTC

The Centaur has ignited and the payload fairing has jettisoned.

August 30th 2012 - 08:09 UTC

The first stage has shut down and separated from the upper stage.

August 30th 2012 - 08:06 UTC

The vehicle has passed the point of maximum dynamic pressure.

August 30th 2012 - 08:05 UTC

The booster engine is performing well.

August 30th 2012 - 08:05 UTC

Liftoff! An Atlas V carrying the RBSP Spacecrafts for NASA has lifted off from Cape Canaveral on time at 08:05 UTC.

August 30th 2012 - 08:03 UTC

Range is green.

August 30th 2012 - 08:03 UTC

T-1 Minute and counting. All is go.

August 30th 2012 - 08:02 UTC

T-3 Minutes and counting.

August 30th 2012 - 08:00 UTC

A 'GO' has been given to come out of the built in hold.

August 30th 2012 - 07:57 UTC

T-4 Minutes and holding: The RBSP spacecrafts are being transferred to internal battery power.

August 30th 2012 - 07:36 UTC

T-4 Minutes and holding: The countdown has entered a planned 25 minute hold.

August 30th 2012 - 07:31 UTC

The latest weather briefing bumps up the odds to 90% chance of favourable conditions for lift off. A 24 hour scrub has weather odds at 70%.

August 30th 2012 - 07:23 UTC

In just over five minutes launch managers will get a weather briefing to update them on the current conditions.

August 30th 2012 - 07:13 UTC

Weather conditions have improved to a 80% chance of favourable conditions.

August 30th 2012 - 05:51 UTC

There are no launch vehicle or spacecraft anomalies, the range looks good and the only concern for weather is cumulous cloud, giving a 70% chance of 'GO' to launch this morning.

August 30th 2012 - 05:40 UTC

T-2 Hours and counting: The launch teams have polled and are ready to support launch. The countdown has came out of the T-2 Hour built in hold.

August 30th 2012 - 05:30 UTC

The Atlas V first stage was filled with refined kerosene Wednesday night ahead of launch. Today fueling of the cryogenic liquid oxygen and liquid hydrogen will begin in the next 5 minutes. The first stage uses refined kerosene and liquid oxygen, With the Centaur upper stage burning liquid oxygen and liquid hydrogen.

August 28th 2012 - 20:00 UTC

The Atlas V has been rolled to the launch pad today at 18:00 UTC for Thursday's launch attempt. The start of the 20 minute window opens at 08:05 UTC.

August 25th 2012 - 11:30 UTC

A meeting was held to discuss Tropical Storm Isaac, Expected to gain Hurricane status soon, which is due to pass by Florida. For the safety of the vehicle it has been decided to roll back to the Vertical Integration Facility and hold out during the storm. A new launch date of August 30th at 08:05 UTC has been set.

August 25th 2012 - 08:23 UTC

A scrub has been announced due to weather. The next attempt will be tomorrow.

August 25th 2012 - 08:16 UTC

A new T-0 of 08:27 UTC, At the end of the window, has been announced.

August 25th 2012 - 08:01 UTC

Everyone is GO bar the weather, which remains no-go. The hold will not be released at this time.

August 25th 2012 - 08:00 UTC

A poll to come out of the built in hold is occurring.

August 25th 2012 - 07:39 UTC

T-4 Minutes and holding: The countdown has entered a planned 25 minute hold.

August 25th 2012 - 07:30 UTC

Weather is currently red for the lightning rule and the cumulus cloud rule due to thunderstorms within 10 miles of the launch path. They expect them to clear in time for launch.

August 25th 2012 - 07:07 UTC

Fueling of the vehicle is in the final topping off mode, which will continue until launch. Everything is going well in the countdown with a 60% chance of green weather for launch.

August 24th 2012 - 08:35 UTC

Testing will be required to check if the issue was with the range C-Band antennas or in the vehicles C-Band beacon. If the issue is on the vehicle they may need to go inside and change out the beacon. Tomorrows launch attempt has the same launch window, opening at 08:07 UTC and will run 20 minutes in length.

August 24th 2012 - 08:33 UTC

The issue that caused todays scrub was a C-Band tracking beacon on the vehicle, The frequency the vehicle was sending out drifted. This beacon is extremely important in tracking the vehicle during flight.

August 24th 2012 - 08:21 UTC

The launch has been scrubbed for today, There was not enough time remaining in the launch window to correct the range beacon indication issue. Launch has been rescheduled for tomorrow.

August 24th 2012 - 08:19 UTC

Range is still no go at this time.

August 24th 2012 - 08:12 UTC

A new T-0 has been announced of 08:25 UTC, The final chance in this 20 minute window.

August 24th 2012 - 08:05 UTC

The anomaly team are discussing what they call 'a beacon issue' regarding the range. Launch remains at T-4 minutes and holding.

August 24th 2012 - 08:03 UTC

A No Go has been called due to a range issue. It is unclear what that is yet, but the countdown will remain at T-4 Minutes and holding. The launch window for today spans 20 minutes.

August 24th 2012 - 07:44 UTC

This will be the 7th ULA launch of 2012 and the 32nd Atlas V launch since the debut launch in 2003. The launch configuration today is the 401 with no solid rocket boosters and a single centaur engine.

August 24th 2012 - 07:38 UTC

T-4 Minutes and holding: The countdown has entered a planned 25 minute hold.

August 24th 2012 - 07:37 UTC

The latest weather forecast has improved conditions as the countdown nears a 25 minute built in hold at T-4 Minutes.

August 24th 2012 - 07:22 UTC

Fueling is now in topping off mode for the Atlas V, Weather has a 70% chance of 'GO' this morning as the team work no issues in the countdown.

August 24th 2012 - 06:30 UTC

The team were able to confirm through other sensors the fill and drain valve did cycle when tested to do so. The faulty sensors will be disabled and the launch count will continue.

August 24th 2012 - 06:17 UTC

The anomaly team are discussing a possible issue with a fill and drain valve in the Atlas V first stage.

August 24th 2012 - 05:41 UTC

T-2 Hours and counting: Launch teams have given a go to for tanking of the Atlas V this morning.

August 22nd 2012 - 14:10 UTC

The Atlas V is now at the launch pad after rolling out at 12:00 UTC, The trip took nearly 30 minutes.

August 21st 2012 - 16:20 UTC

Weather for Fridays launch provides a 60% chance of being able to launch in the 20 minute launch window which begins at 08:07 UTC.

August 20th 2012 - 23:00 UTC

Launch has been reset to August 24th at 08:07 UTC to give engineers time to check the engine hydraulic actuators on the first stage after testing of another Atlas 5 vehicle showed a problem.

August 9th 2012 - 05:00 UTC

The Radiation Belt Storm Probes Spacecrafts freshly encapsulated in the payload fairing were taken to Space Launch Complex 41 yesterday, August 10th 2012 where they were raised and attached to the top of the Centaur upperstage. The Centaur was mated to the Atlas V first stage previously and this marks the completition of the 'stack'.

August 9th 2012 - 05:00 UTC

The Radiation Belt Storm Probes Spacecrafts, called A and B were stacked atop each other on July 27th 2012 before the payload fairing was lowered on August 6th 2012. The next milestone will be delivery to Space Launch Complex 41 for stacking atop the Atlas V rocket.