PLANET PROFILE VENUS
All About Space|Issue 129
Earth’s sister planet is a harsh, deadly world, making it an interesting one to observe
PLANET PROFILE VENUS

Hell on Earth is a phrase used by many, but one planet actually matches this idea of a harsh and inhospitable environment – that accolade falls to Venus. The second planet from the Sun is similar in size and density to Earth, with it being only 638 kilometres (396 miles) smaller in diameter and 0.27 grams per cubic centimetre lower in density. These physical dimensions may paint a picture of a world similar to Earth, but that’s far from the case. Venus underwent a different evolution, and its dense atmosphere has fashioned the hottest surface temperature in the entire Solar System at 465 degrees Celsius (869 degrees Fahrenheit), with atmospheric pressures that are over 90 times that of Earth’s at sea level.

Venus’ atmosphere is composed mainly of the greenhouse gas carbon dioxide, with small amounts of nitrogen and traces of other gases, most notably sulphur dioxide and argon. Comparing this atmosphere to Mars’ – which is about 100 times thinner than Earth’s – again highlights that these planetary evolutions took opposite approaches; one planet lost its atmospheric greenhouse gases while the other formed a thick atmosphere and as a result traps heat in a runaway greenhouse effect.

This story is from the {{IssueName}} edition of {{MagazineName}}.

Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.

This story is from the {{IssueName}} edition of {{MagazineName}}.

Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.

MORE STORIES FROM ALL ABOUT SPACEView all
MYSTERIES OF THE UNI WHERE ARE ALL THE SPIRAL GALAXIES?
All About Space UK

MYSTERIES OF THE UNI WHERE ARE ALL THE SPIRAL GALAXIES?

There are far fewer spiral galaxies than elliptical ones in the Supergalactic Plane, and scientists are keen to discover why

time-read
7 mins  |
Issue 161
ZOMBIE STARS
All About Space UK

ZOMBIE STARS

+10 OTHER TERRIFYING SPACE OBJECTS

time-read
8 mins  |
Issue 161
HOW TO BEAT LIGHT POLLUTION
All About Space UK

HOW TO BEAT LIGHT POLLUTION

Thought it was impossible to observe the wonders of the night sky from towns and cities? Think again. Follow our tips and tricks on successfully observing through sky glow

time-read
2 mins  |
Issue 161
15 STUNNING STAR CLUSTERS
All About Space UK

15 STUNNING STAR CLUSTERS

These beautiful stellar groupings are spattered across the cosmos

time-read
8 mins  |
Issue 161
Eileen Collins "It was a difficult mission...we were the first to see Mir"
All About Space UK

Eileen Collins "It was a difficult mission...we were the first to see Mir"

Having served as both the first female pilot and first female commander of NASA's Space Shuttle, Collins boosted the involvement of women in space exploration to a whole new level

time-read
9 mins  |
Issue 161
MARS LEAKS FASTER WHEN IT'S CLOSER TO THE SUN
All About Space UK

MARS LEAKS FASTER WHEN IT'S CLOSER TO THE SUN

The Red Planet has lost enough water to space to form a global ocean hundreds of kilometres deep

time-read
2 mins  |
Issue 161
FUTURE TECH KANKOH-MARU
All About Space UK

FUTURE TECH KANKOH-MARU

This ambitious reusable spacecraft will be capable of taking 50 people to and from orbit

time-read
2 mins  |
Issue 161
THE FINAL FRONTIER
All About Space UK

THE FINAL FRONTIER

Beyond the reach of the Sun is a fascinating region of the cosmos that were only just beginning to explore

time-read
8 mins  |
Issue 161
A long-lost moon could explain Mars' weird shape and extreme terrain
All About Space UK

A long-lost moon could explain Mars' weird shape and extreme terrain

A long-lost moon could explain why Mars is so different from the other rocky planets in the Solar System. Today Mars has two tiny moons.

time-read
2 mins  |
Issue 161
A sprinkling of cosmic dust may have helped kick-start life on Earth
All About Space UK

A sprinkling of cosmic dust may have helped kick-start life on Earth

Cosmic dust may have helped kick-start life on Earth. New findings challenge a widely held assumption that this wasn't a plausible explanation.

time-read
3 mins  |
Issue 161