Archive for ‘countdown’

05/05/2020

Countdown begins as Europe and Japan prepare spacecraft for 7-year journey to Mercury

Joint mission will send two unmanned probes into orbit around the closest planet to the sun

The BepiColombo standing in position at a test facility in Spijkenisse. Its mission to Mercury is scheduled for launch on an Ariane 5 from Europe's Spaceport in Kourou, French Guiana on October 20. Photo: AFP Photo
The BepiColombo standing in position at a test facility in Spijkenisse. Its mission to Mercury is scheduled for launch on an Ariane 5 from Europe’s Spaceport in Kourou, French Guiana on October 20. Photo: AFP Photo

Final preparations were underway on Friday for the launch of a joint mission by European and Japanese space agencies to send twin probes to Mercury, the closest planet to the sun.

An Ariane 5 rocket is scheduled to lift the unmanned spacecraft into orbit from French Guiana shortly before midnight, the start of a seven-year journey to the solar system’s innermost planet.

Mercury is seen in silhouette, lower third of image, as it transits across the face of the sun. Photo: AFP PHOTO / NASA / BILL INGALLS
Mercury is seen in silhouette, lower third of image, as it transits across the face of the sun. Photo: AFP PHOTO / NASA / BILL INGALLS
The European Space Agency says the 1.3 billion (US$1.5 billion) mission is one of the most challenging in its history. Mercury’s extreme temperatures, the intense gravity pull of the sun and blistering solar radiation make for hellish conditions.
An Ariane-5 rocket is set for launch at the Guiana Space Centre in Kourou in French Guiana. Photo: Kyodo
An Ariane-5 rocket is set for launch at the Guiana Space Centre in Kourou in French Guiana. Photo: Kyodo
Newly developed electrical ion thrusters will help nudge the spacecraft, which was named after Italian scientist Giuseppe “Bepi” Colombo, into the right orbit.
Aborted launch astronauts may head to International Space Station this year: Nasa head says
12 Oct 2018

When it arrives, BepiColombo will release two probes – Bepi and Mio – that will independently investigate the surface and magnetic field of Mercury. The probes are designed to cope with temperatures varying from 430 degrees Celsius (806F) on the side facing the sun, and -180 degrees Celsius (-292F) in Mercury’s shadow.

An Ariane-5 rocket is transported to its launch site at the Guiana Space Centre in Kourou. Photo: Kyodo
An Ariane-5 rocket is transported to its launch site at the Guiana Space Centre in Kourou. Photo: Kyodo
Scientists hope to build on the insights gained by Nasa’s Messenger probe, which ended its mission in 2015 after a four-year orbit of Mercury. The only other spacecraft to visit Mercury was Nasa’s Mariner 10 that flew past the planet in the mid-1970s.
Japanese space robots have landed on asteroid to carry out world-first survey
22 Sep 2018

Mercury, which is only slightly larger than Earth’s moon, has a massive iron core about which little is known. Researchers are also hoping to learn more about the formation of the solar system from the data gathered by the BepiColombo mission.

It is the second recent cooperation between the Europeans and the Japan Aerospace Exploration Agency. JAXA’s Hayabusa2 probe dropped a German-French rover on the asteroid Ryugu earlier this month.
Source: SCMP
24/09/2019

China 70th anniversary: Pigeon ban and lockdowns as countdown begins

Chinese workers with Chinese flagImage copyright EPA
Image caption China is getting dressed up for its big birthday party

One week from now, the People’s Republic of China will mark its 70th anniversary with celebrations on a scale not seen in China in decades.

Beijing is pulling out all stops and 1 October will be flush with fireworks, fanfare and a huge military parade.

To ensure it goes smoothly, authorities have been ramping up security in the capital – and online – for weeks.

But with yet more protests expected in Hong Kong, the territory might just rain on China’s parade.

What is it all about?

The birth of modern China was declared on 1 October 1949, after the communists under Mao Zedong won the civil war that followed World War Two.

Portrait of Xi JinpingImage copyright EPA
Image caption Exhibitions are highlighting the achievements of the Communist Party

The date is marked every year, but celebrations for this 70th anniversary are expected to eclipse previous events.

It’s the first big anniversary since China has emerged as a global power. While 10 years ago China was a superpower in the making, it is now the world’s second largest economy, almost eye-to-eye with the United States.

What to expect?

The main celebrations will take place in the capital, Beijing, where there will be a grand military parade with “advanced weapons” on display, followed by a “mass pageant”.

President Xi Jinping – considered the most powerful Chinese leader since Mao – will address the Chinese people. His speech is expected to celebrate China’s rapid growth and which will be closely watched for any indication of the country’s direction in the coming years.

The president will also hand out honours for contributions to the country and in the evening there will be a grand gala and fireworks show.

All official Chinese celebrations are carefully choreographed and the success of this one is particularly important to the government.

The Dos and Don’ts

The parade – open to invited guests only – will take place around Tiananmen Square in central Beijing. The surrounding area will be practically under lockdown, and in fact has been so several times already.

During rehearsals leading up to the big day, hotels near Tiananmen Square told guests that for several hours each day, no-one would be able to leave the hotel or return to it should they be out, leading to much travel chaos and rebookings.

Many shops and restaurants in the centre are also closed or have shortened hours and some subway stations are temporarily shut.

Chinese paramilitary policeImage copyright EPA
Image caption Security is tight ensure the party goes to plan

Trains to Beijing are running numerous safety checks on their passengers and vehicles going into the city are also being tightly watched.

On the big day itself, areas around Tiananmen Square will be blocked and guarded. Local residents will need to identify themselves if they want to pass.

To ensure the sun will shine brightly on the celebration in notoriously polluted Beijing, several coal plants and construction sites in and around the city have been ordered to stop work for the duration.

There’s also a ban on any low-flying aerial vehicles in place. That means anything from light aircraft to drones, balloons and even racing pigeons.

Censorship galore

Across much of the city centre, there are national flags set up at every door. Voluntary inspectors are monitoring the streets and locals have told the BBC they’re being questioned after having even brief conversations with foreigners

One person said she was asked by an inspector: “Who were those foreigners? Why were they here?”

The tight control naturally extends online as well. Popular social media platform Weibo said it was deleting content that “distorts” or “insults” the country’s history ahead of the anniversary.

Chinese flags outside a row of shopsImage copyright GETTY IMAGES
Image caption Every house and every shop is sporting a national flag

Chinese journalists are always expected to toe the party line anyway, but starting in October they will have to pass an extra test to prove they are versed particularly in Xi Jinping’s teachings, officially called Xi Jinping Thought on Socialism with Chinese Characteristics, which has been written into the constitution.

Whether or not they pass the exam will then determine whether they’ll be accredited as journalists.

“The fundamental point with this ‘training’ and indoctrination process isn’t so much about the content,” David Bandurski of China Media Watch told the BBC.

“It is about reinforcing the message and understanding among journalists that they work, first and foremost, for the Chinese Communist Party, and serve its agenda.”

So not only will the events be choreographed – the domestic coverage of them will also be tightly guarded.

What about Hong Kong?

Despite Beijing’s determination to let its achievements shine on 1 October, there’s a good chance Hong Kong will pull focus.

Anti-Beijing protests always take place in Hong Kong on China’s National Day, but this time, the activists know that the world is watching.

Anti-government protests have rocked the city for months and the situation shows no sign of dying down.

Clashes between police and activists have been becoming increasingly violent, with police using tear gas and activists storming parliament.

Protester throwing a tear gas can back at the policeImage copyright AFP
Image caption The protests have often escalated into violent clashes

That means two things for 1 October: official celebrations in the territory are being toned down to avoid clashes – the annual fireworks display has been cancelled – while at the same time, activists are planning to step up their protests.

On Sunday 29 September, a “Global Anti Totalitarianism March” is scheduled to take place at various locations around the world in support of Hong Kong.

On 1 October itself, a march in central Hong Kong is planned with everyone asked to wear black.

If the past weeks’ demonstrations are anything to go by, the smiles and celebrations in Beijing will be competing for media space with pictures of tear gas and angry young protesters in Hong Kong.

Source: The BBC

15/07/2019

Chandrayaan-2: India space launch delayed by technical problem

The rocket that will carry the Chandrayaan-2 satelliteImage copyright EPA
Image caption The rocket weighs as much as a fully-loaded jumbo jet

The launch of India’s second lunar mission has been halted less than an hour before the scheduled blast-off, due to a technical problem.

The countdown stopped 56 minutes before the launch after a “technical snag was observed in launch vehicle system,” India’s space agency said.

The satellite had been scheduled for launch at 02:51 local time on Monday (21:21 GMT Sunday) from Sriharikota space station on India’s eastern coast.

A new launch date will follow soon.

What is this mission all about?

India hopes the $150m mission, Chandrayaan-2, will be the first to land on the Moon’s south pole.

It will focus on the lunar surface, searching for water and minerals and measuring moonquakes, among other things.

If successful, India will become the fourth country to make a soft landing on the Moon’s surface.

Only the US, China and the former Soviet Union have been able to do so.

India’s Prime Minister, Narendra Modi has championed the country’s space programmes, but critics would like to see poverty at home tackled first.

Presentational white space

The chief of the Indian Space Research Organisation (Isro), K Sivan, said this was “the most complex space mission ever to be undertaken by the agency”.

If the launch had gone to plan, the lander and rover would have been expected to touch down in early September.

India’s space agency is yet to give more details on why the launch was delayed and how it will affect the timeline.

The country’s first lunar mission in 2008 – Chandrayaan-1 – did not land on the lunar surface, but it carried out the first and most detailed search for water on the Moon using radars.

How will it get to the Moon?

Chandrayaan-2 (Moon vehicle 2) will attempt a soft landing near the little-explored south pole of the Moon.

India is using its most powerful rocket, the Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk-III), in this mission. It weighs 640 tonnes (almost 1.5 times the weight of a fully-loaded 747 jumbo jet) and at 44 metres (144ft) is as high as a 14-storey building.

Graphic showing the launch vehicle with different parts labelled
The spacecraft weighs 2,379kg (5,244lb) and has three distinct parts: an orbiter, a lander and a rover.

The orbiter, which has a mission life of a year, will take images of the lunar surface, and “sniff” the tenuous atmosphere.

The lander (named Vikram, after the founder of Isro) weighs about half as much, and carries within its belly a 27kg Moon rover with instruments to analyse the lunar soil. In its 14-day life, the rover (called Pragyan – wisdom in Sanskrit) can travel up to a half a kilometre from the lander and will send data and images back to Earth for analysis.

“India can hope to get the first selfies from the lunar surface once the rover gets on its job,” Dr Sivan said.

Presentational grey line

A new frontier for India’s space programme

By science writer Pallava Bagla

A soft landing on another planetary body – a feat achieved by just three other countries so far – would be a huge technological achievement for Isro and India’s space ambitions.

It would pave the way for future Indian missions to land on Mars and an asteroid. More importantly, it would open up the possibility of India sending astronauts to the Moon. India hopes to carry out a crewed space flight by 2022.

India also wants to assert itself as a space power to be reckoned with – and national pride is riding high as it aims to hoist its flag on the surface of the Moon.

A successful mission to the Moon would also be a win for India’s ambitious space agency, which has had a string of successes recently.

Media caption Is India a space superpower?

In 2014, it successfully put a satellite into orbit around Mars, becoming only the fourth nation to do so. In 2017, India created history by successfully launching 104 satellites on a single mission, overtaking the previous record of 37 satellites launched by Russia in 2014.

All eyes are on Isro again. Global interest in India’s frugal Moon mission is peaking, according to Simonetta Di Pippo, director of the UN office of Outer Space Affairs.

“The mission’s studies of lunar topography, mineralogy, elemental abundance, the lunar exosphere, and signatures of hydroxyl and water ice will contribute to scientific progress for all of humankind,” she says.

The Indian space community is nervous and Dr Sivan says “there is churning in his stomach”.

“Unknown-unknowns can kill a mission, [although] no stone has been left unturned to understand all the complexities”.

Presentational grey line

How long is the journey to the Moon?

The launch is only the beginning of a 384,000km (239,000-mile) journey – the robotic craft is expected to land on the Moon some 54 days later.

Isro chose a circuitous route to take advantage of the Earth’s gravity, which will help slingshot the satellite towards the Moon. India does not have a rocket powerful enough to hurl Chandrayaan-2 on a direct path.

“There will be 15 terrifying minutes for scientists once the lander is released and is hurled towards the south pole of the Moon,” Dr Sivan says.

Graphic: How India's Chandrayaan-2 will reach the moon
He explains that those who had been controlling the spacecraft until then will have no role to play in those crucial moments. The actual landing, he adds, is an autonomous operation dependent on all systems performing as they should. Otherwise, the lander could crash into the lunar surface.

Earlier this year, Israel’s first Moon mission crash-landed while attempting to touch down.

Site of successful moon landings graphic showing where other countries have landed on the moon

Who is on the team?

Nearly 1,000 engineers and scientists have worked on this mission. But for the first time, Isro has chosen women to lead an interplanetary expedition.

Two women are steering India’s journey to the Moon. While programme director Muthaya Vanitha has nurtured Chandrayaan-2 over the years, it will be navigated by Ritu Karidhal.

“Women power is powering India’s Moon ambitions,” Dr Sivan said, adding that at Isro, “women and men are all equal. Only talent matters – not the gender.”

Source: The BBC

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