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The launch of a NASA rocket from the remote wilderness of the Northern Territory has been delayed due to consistent winds.

After a previous day's delay because of heavy rain, the Suborbital Imaging Spectrograph for Transition region Irradiance from Nearby Exoplanet host stars, or SISTINE, mission launch was again delayed on Tuesday night.

"We went through the countdown with every intent to launch, but the consistent winds were outside the parameters that we considered safe," Michael Jones, Executive Chairman and Group CEO of Equatorial Launch Australia, said in a statement.

"On that basis, we made the decision to delay the launch tonight."

Information about a rescheduled launch window would be provided in due course, Mr Jones said.

A first successful launch occurred late last month from the Arnhem Space Centre on the Dhupuma Plateau, near Nhulunbuy.

Together with a third rocket to launch later this month, the SISTINE rocket will take measurements of ultraviolet light to help narrow the search for habitable planets.

The two missions will work together to get a full picture of the ultraviolet light coming from stars Alpha Centauri A and B.

Just how much ultraviolet radiation is emitted by different types of stars is poorly known.

Without accurate knowledge, astronomers can't accurately predict which planets might host life.

"We need to understand the stars so that we can understand any planets we find there," said Kevin France, astronomer at the University of Colorado, Boulder, and principal investigator for the SISTINE mission.

The rocket launched last month will also help scientists explore how a star's light can influence a planet's habitability.

The rocket is carrying an X-ray Quantum Calorimeter, allowing University of Michigan scientists to measure interstallar X-rays with precision to provide new data on the structure and evolution of the cosmos.

About 75 NASA personnel are in Arnhem Land for the missions, the agency's first in Australia in 27 years and first-ever from a commercial spaceport outside the US.

NASA last launched from Australia in 1995, when its rockets lifted off from the Royal Australian Air Force Woomera Range Complex in South Australia.

The local Yolngu helped build Arnhem Space Centre, which is owned by Equatorial Launch Australia, on their land.

They're also taking part in the upcoming launch, including retrieving rocket modules when they return to Earth.

© AAP 2022

Retired AFL star Sam Fisher has been freed from jail in favour of a residential rehab facility, as he awaits trial on drug trafficking charges.

The 39 year old applied for bail to allow him to deal with his drug addiction, after being charged with trafficking a large commercial quantity of drugs.

Fisher allegedly concealed one kilogram of methylamphetamine and 84 grams of cocaine while organising for it to be sent from Melbourne to Perth.

Officers searched his Sandringham home when he was arrested on May 18, seizing 13 grams of methylamphetamine and almost two litres of Butanediol.

Fisher, a past All-Australian and two-time St Kilda best and fairest, admits having a drug addiction but denies the trafficking allegations.

Prosecutor Daniel White said Fisher's offending could land him with a lifetime sentence, as he argued against his release in Melbourne Magistrates Court.

He alleged Fisher was the main offender in the case, after Perth man Julien Morvan was charged and then bailed by a WA court over allegations he paid for the drugs.

"It is Mr Fisher who obtains the drugs and onsells them and it's Mr Morvan who pays for the drugs," Mr White told the court on Tuesday.

"Mr Fisher cannot, on any count, be described as just a runner. He was, in the prosecution's submission, a principal offender."

Fisher's lawyer Dermot Dann previously argued it was in the community's best interests to allow him to undergo rehabilitation to address his addiction issues.

Magistrate Bernie Fitzgerald granted Fisher bail after finding his lack of prior convictions and the availability of residential rehab weighed in his favour.

He ordered Fisher be released on bail to go "immediately" to the rehabilitation centre from prison on Tuesday, escorted by a staff member.

Fisher's parents offered their family home as a surety, but Mr Fitzgerald agreed to release Fisher with a $25,000 guarantee from them.

He must abide by strict bail conditions, including that he complete the 90-day rehab program, undergo drug testing and abide by a curfew.

He will return to court for a bail variation after 90 days, where he may be ordered to attend another rehab or move to a residential address.

Fisher will face a committal mention on September 7.

© AAP 2022

Amber Heard has requested a US judge overturn the verdict in her unsuccessful multi-million dollar defamation case with Johnny Depp and order a new trial.

The Aquaman star, 36, says the decision returned on June 1 in favour of Mr Depp was not supported by the evidence presented during the six-week trial.

In documents seen by The Press Association news agency, Ms Heard's lawyers also argue investigations should be made into "improper juror service".

Mr Depp sued his former partner over a 2018 article she wrote for The Washington Post about her experiences as a survivor of domestic abuse, which his lawyers said falsely accused him of being an abuser.

"The verdict is excessive as a matter of law in light of the evidence and law, and should be set aside," the documents stated.

"For all the reasons set forth above, and for the reasons set forth on the record during the hearings and at trial, in the Motions in Limine and Motions to Strike, Ms Heard respectfully requests this Court to set aside the jury verdict in favour of Mr Depp and against Ms Heard in its entirety, dismiss the complaint, or in the alternative, order a new trial.

"Ms Heard further requests this Court to investigate potential improper juror service and take appropriate action warranted by the results of the investigation."

The actress' lawyers claim one of the jurors during the trial was not properly vetted by the court and that information was "inconsistent".

"The information on the jury panel list appears to be inconsistent with the identity and demographics of one of the Jurors," the document, signed by Ms Heard's lawyer Elaine Bredehoft, says.

"Juror No 15 was apparently born in 1970, not 1945, as reported to and relied upon by the parties - including Ms Heard - in selecting a jury panel."

The filing added the damages awarded to Mr Depp following the verdict, which total $US15 million ($A22 million), were "excessive" and "indefensible".

The sum was subsequently reduced by judge Penney Azcarate to $US350,000 ($A510,000) under a state cap.

Ms Bredehoft previously vowed Ms Heard would appeal the decision in the lawsuit and has "excellent grounds" to do so, saying there was "so much" evidence that was not included during the trial.

Mr Depp said he felt "at peace" and was "truly humbled" after winning the lawsuit, adding his decision to pursue the case "was only made after considerable thought" and his goal was to "reveal the truth, regardless of the outcome".

© PAA 2022