Summary
- It had shifted 47.5 arcminutes across the sky over 23 years, about one and a half times the width of the full moon, potentially indicating the presence of a Neptune-sized planet in the Solar System.
- The problem is that sunlight would have to travel from the Sun to the planet and then back to Earth, making a Neptune-sized planet 10 times farther from the Sun about 100 times fainter in reflected light, not 10,000 times.
- Using the infrared spectrum, Planet Nine would be much easier to detect than in visible light, rather than being subject to the same reduction in reflected sunlight.
AI Generated Summary
Software flagged 13 candidate pairs of infrared sources. After a manual check, only one remained. It had shifted 47.5 arcminutes across the sky over 23 years, about one and a half times the width of the full moon, potentially indicating the presence of a Neptune-sized planet in the Solar System.
Comments
0 commentsNo comments yet — be the first.