The United Arab Emirates' "Hope" probe on Monday successfully entered Mars' orbit, making history as the Arab world's first interplanetary mission.

The probe is designed to reveal the secrets of Martian weather, but the UAE also wants it to serve as an inspiration for the region's youth.

"To the people of the UAE, to the Arab and Muslim nations, we announce the succesful arrival to Mars' orbit. Praise be to God," said Omran Sharaf, the mission's project manager.

Turkish President Recep Tayyip Erdogan unveiled an ambitious 10-year space program for his country Tuesday that includes missions to the moon, sending Turkish astronauts into space and developing internationally viable satellite systems.

Erdogan announced the program, seen as part of his vision for placing Turkey in expanded regional and global role, during a live televised event laced with special effects.

The first Arab interplanetary mission reached Mars' orbit Tuesday in the most critical stage of its journey to unravel the secrets of weather on the Red Planet.

The unmanned probe—named "Al-Amal", Arabic for "Hope"—blasted off from Japan last year, the latest step in the UAE's ambitious space programme.

Here are some facts and figures about the oil-rich nation's project, which draws inspiration from the Middle East's golden age of cultural and scientific achievements.

Outsize plans

The United Arab Emirates, made up of seven members including Dubai and Abu Dhabi, has 12 satellites in orbit, with plans to launch several more in coming years.

In September 2019, it sent the first Emirati into space, Hazza al-Mansouri, who was part of a three-member crew. They blasted off from Kazakhstan, returning home after an eight-day mission in which he became the first Arab to visit the International Space Station.

But the UAE's ambitions go much further, with a goal of building a human settlement on Mars by 2117.

In the meantime, it plans to create a white-domed "Science City" in the deserts outside Dubai to simulate Martian conditions and develop the technology needed to colonise the planet.

With less than a year to launch, NASA's Lucy mission's third and final scientific instrument has been integrated onto the spacecraft.

A new study out this month suggests that Jupiter's Trojan asteroids may be more peculiar than previously thought. The Trojan asteroids are rocky objects which orbit the sun just ahead of and just behind the gas giant, in gravitational sweet spots known as Lagrange points. The swarm ahead of Jupiter, known as the L4 (Greek) group, is slightly larger than the L5 (Trojan) swarm behind, but until now, astronomers believed that there was otherwise little differentiation between the two swarms. The paper released this month appears to change that.

The research team, using data from the Asteroid Terrestrial-impact Last Alert System (ATLAS) based in Hawaii, has discovered unexpected variations in the shape of the Trojans. This new study suggests that objects in the L4 population are actually more elongated than those in the L5 population, on average.

Why does this matter? Well, the difference "may imply a different collisional evolution within each cloud," the paper suggests. The L4 swarm's larger population means objects within it have had had more opportunities to collide with one another. As one Trojan slams into another, larger objects are worn down or broken into smaller pieces.

Almost 3,000 operational spacecraft orbit our Earth. This number is growing constantly, thanks to cheaper materials and smaller satellites.

Having this many satellites in orbit can create problems, including space junk and the way they change our view of the night sky. But satellites provide a vital service.

Many people are familiar with GPS, which helps us navigate. Some may know satellites provide crucial data for our weather forecasts. But satellites affect our lives in many different ways—and some of these may surprise you.

1. Spending money

Whether you pay for your morning coffee using a contactless payment, Google Pay, or even with cash withdrawn from an ATM, none of it would be possible without satellites. In fact, all financial transactions—from multimillion pound stock market transactions, to your monthly Netflix subscription – rely on satellite location and timing services for security.

Global navigation satellite systems orbit about 20,000km above the surface of the Earth and continually communicate with phones and computers to tell them precisely where they are and what time it is.