How many moons can you see with the naked eye? The answer may surprise you.. Of the hundreds of moons orbiting the planets of our solar system, all but four are too faint to see with the naked eye. One of the four is, of course, Earth’s own Moon. The Read more…
The planet Mars has been shining brightly in the night sky for the better part of a year now, and a number of spacecraft have been speeding towards it most of that time. Among them, Mars 2020 mission, with plans to land the Perseverance rover on the Red Planet on 18th February 2021 shortly before 9pm GMT. Mars remains clearly Read more…
NASA’s Juno Spacecraft launched from Cape Canaveral August 5th 2011, beginning its long journey to the mighty gas giant Jupiter with the aim to reveal and understand the formation and evolution of the planet. Juno was equipped with many scientific instruments to investigate the existence of a rocky inner core, Read more…
When the first astronauts came back from the Moon more than half a century ago, they brought back a scientific treasure trove of soil and rock samples. These were – and still are – intensely scrutinised in laboratories all over the world, allowing scientists to gradually piece together the history Read more…
Mars is the only other planet in the solar system apart from the Earth that combines a clear – albeit thin – atmosphere and a solid surface. Therefore, an astronaut standing on the surface may observe and record phenomena on the martian sky, both astronomical and atmospheric. One of these Read more…
By Apostolos Christou, Researh Astronomer Every 26 months, the positions of Mars and the Earth align in such a way to allow probes launched from Earth to reach Mars (see how to calculate launch windows here). The next such launch window has just opened, with three separate missions under starter’s Read more…
When Thomas Romney Robinson, director of the Armagh Observatory, invented the cup anemometer in 1846, little did he know that one day his invention would be recording the alien breeze on the surface of another world. Fast forward 130 years: On 20 October 1975, a small capsule detached from the Read more…
50 years ago, humankind took its first steps on the moon, and the world celebrated. However, 47 years ago, the last human walked on the moon, and we have not been back since. Until now. The new programme that will take humans back to the moon is called Artemis, who Read more…
Those of you going out late in the day for an evening stroll or just enjoying the spring smells in your garden may have noticed a bright white beacon of light shining high in the west after sunset. This is Venus, the closest planet to the Earth and the brightest Read more…
Those of you who have been on this planet for longer than a few decades may recall the early days of the space age, when rocket launches were far from commonplace and each probe launched promised to do something fundamentally new: the first satellite to orbit the Earth, the first Read more…