HomeSpaceHow Big???

How Big???

Author

Date

Category

New Discovery: The Largest Planet In The Universe

The cosmos never ceases to amaze, and our understanding of it is constantly evolving.

One of the intriguing questions that has fascinated astronomers and space enthusiasts alike is: How big can a planet get? With the discovery of exoplanets beyond our solar system, this question has taken on new dimensions.

Before 1992, Jupiter, with its width about 11 times that of Earth, was considered the largest known planet. However, the discovery of exoplanets has introduced us to worlds that dwarf even Jupiter. Some of these exoplanets, often referred to as “super-Jupiters,” have a radius nearly twice that of Jupiter. Solène Ulmer-Moll, an exoplanet researcher at the University of Geneva, points out that these colossal planets often orbit very close to their host stars, making them truly extreme objects in the universe.

Interestingly, size and mass don’t always correlate in the world of planets. For instance, the gas giant HAT-P-67 b, with a radius about twice that of Jupiter, is among the largest known planets in terms of width. Yet, its low density means it possesses only about a third of Jupiter’s mass. Another massive exoplanet, HD 39091 b, located 60 light-years from Earth, boasts a mass around 12.3 times that of Jupiter.

But there’s a limit to planetary growth. Once a celestial body reaches a certain size and mass, it transitions into a “brown dwarf” – often termed as “failed stars.” These objects are heavier than super-Jupiters but lack the mass to initiate ordinary hydrogen fusion in their cores. The boundary between planets and brown dwarfs is believed to be around 14 times the mass of Jupiter.

The universe is vast, and our quest to understand it is ongoing. As we continue to explore and discover, we come closer to answering the enigmatic questions that the cosmos presents. Who knows what other colossal worlds await discovery in the distant corners of our galaxy?

Previous article
Next article

3 COMMENTS

  1. hydrogen fusion? guess you dont know about the electric universe, sad that in this age people still thing stars are ignited by fusion reactions instead of being plasma generators formed along Birkeland currents by Z pinch’s, you will never understand cosmology till you realize that, z big bang is Kuput

    2

    0

Recent posts

Recent comments

Tauhei Notts on Have Your Say
Curious on Have Your Say
freethinker on Have Your Say
freethinker on Have Your Say
freethinker on Have Your Say
freethinker on Have Your Say
freethinker on Have Your Say
nasska on Have Your Say

Pike is our weekly review of the most popular posts and comments seen on YSB in the past week.
Hamilton
scattered clouds
12.8 ° C
13 °
12.8 °
92 %
1.2kmh
33 %
Tue
13 °
Wed
15 °
Thu
14 °
Fri
14 °
Sat
12 °
NZD - New Zealand Dollar
USD
1.6643
EUR
1.7933
AUD
1.0982
CAD
1.2163
GBP
2.0861
JPY
0.0107
CNY
0.2301
INR
0.0199