Tag: Northern Hemisphere
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How Amateur Astronomers Combat Satellite Streaks in Comet Lemmon Photos
Introduction: Comet Lemmon in a Satellite-Rich Sky In recent months, amateur astronomers around the Northern Hemisphere have shared breathtaking images of Comet Lemmon as its glowing coma and delicate tail illuminated the night. Yet behind many of these striking shots lies a common challenge: satellite streaks. The proliferation of Earth observation and communications satellites has…
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Earth’s Climate Imbalance: NASA Data on Sunlight Absorption
Overview: A Growing Climate Imbalance New NASA satellite observations point to a troubling shift in Earth’s energy balance. The planet appears to be absorbing more sunlight overall, while the Northern Hemisphere darkens faster than the Southern Hemisphere. This unexpected imbalance could influence broad weather patterns, rainfall distribution, and long-term climate stability. Scientists emphasize that while…
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Complete Guide To Seeing Comet Lemmon This Week Close To The Big Dipper
What Is Comet Lemmon? Comet Lemmon, officially designated C/2025 A6 (Lemmon) and also known as Comet A6, is a large, long-period comet tracing a dramatic 1,350-year orbit around the sun. First discovered on January 3, 2025 by the Mount Lemmon Survey near Tucson, Arizona, the comet is now making a temporary and accessible appearance for…
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Two Green Comets Night-Sky Spectacle: Lemmon and SWAN Illuminating Autumn Skies
Two Green Comets Grace the Autumn Sky Two rare emerald visitors are sweeping through the inner solar system this fall, offering skywatchers in the Northern Hemisphere a unique chance to observe two comets in the same month. C/2025 A6 (Lemmon) and C/2025 R2 (SWAN) are making their paths around the sun, delivering visible tails and…
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North American Ice Sheets Triggered Most of the End-Ice-Age Sea-Level Rise, Study Finds
Breakthrough reshapes our view of last‑ice‑age sea level A Tulane University-led study has overturned long‑standing assumptions about the forces behind the dramatic global sea‑level rise that marked the end of the last ice age. The research, published in Nature Geoscience, finds that melting ice sheets in North America contributed far more to sea‑level rise between…