How Fast Is the Universe Really Expanding?
New scientific discussions are challenging long-held beliefs about dark energy and the speed of cosmic expansion.
Velocity
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The brief
Current scientific discourse is examining the expansion rate of the universe and the physics governing it. Space Daily reports that the observable universe is approximately 93 billion light-years across, which exceeds its 13.8 billion-year age because space continued to expand as the oldest light traveled.
Coverage from SciTechDaily and Quanta Magazine focuses on the mechanics of this expansion, specifically noting that the universe can expand faster than light without violating physics. Meanwhile, New Scientist highlights a controversial paper claiming that dark energy does not exist.
Future developments depend on the reception of the paper challenging the existence of dark energy and ongoing inquiries into the actual speed of universal expansion.
Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: all claims supported by sources Updated just now.
Quick answers
How large is the observable universe?
According to Space Daily, it is roughly 93 billion light-years across.
Does the expansion of the universe break the laws of physics by exceeding the speed of light?
No, SciTechDaily reports that the universe can expand faster than light without breaking physics.
Is there a consensus on dark energy?
Coverage from New Scientist indicates a controversial paper claims that dark energy does not exist.
Coverage (4)
- The observable universe is roughly 93 billion light-years across despite being only 13.8 billion years old, because space kept expanding while the oldest light was travelling toward us Space Daily · 22h ago
- The Universe Can Expand Faster Than Light Without Breaking Physics SciTechDaily · 22h ago
- Dark energy doesn’t exist, claims controversial paper New Scientist · 22h ago
- How Fast Is the Universe Really Expanding? Quanta Magazine · 22h ago
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