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Mars brighter in 2018 than since 2003

Mars is getting brighter. By mid-2018, Mars will be at its brightest since 2003, when it was closer and brighter in our sky than in some 60,000 years.

Did huge volcanoes lead to oceans on Mars?

A new study links oceans on ancient Mars to the rise of the planet’s Tharsis volcano system, home to the largest volcanoes in our solar system.

Jupiter’s Great Red Spot getting taller as it shrinks

Scientists have noticed that Jupiter’s Great Red Spot has been getting smaller over time. New evidence says the storm is getting taller – and more orange – as it shrinks.

An unusual shot of anticrepuscular rays

It looks like ordinary crepuscular rays are coming from the reflected sunlight at the base of this mountain. But that’s not what’s happening in this rare photo.

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Why do comets emit X-rays? Mystery solved

Researchers fired laser beams onto a plastic foil to mimic some of the conditions comets encounter as they travel through our solar system and to solve a long-standing mystery.

March equinox: All you need to know

Happy equinox! The March 20, 2018, equinox is an event that happens on our sky’s dome and a seasonal marker in Earth’s orbit around the sun.

Are day and night equal at the equinox?

Equinox means “equal night.” And you might hear day and night are equal at the equinoxes. Yet Earth’s air and our sun conspire to give us more daylight at an equinox.

March guide to the bright planets

The moon has now swept past the 2 innermost planets – Venus and Mercury – and Mercury will soon sink into the sunset. Venus still shines brightly in the west after sunset, but the planet focus also shifts to predawn again, to Mars and Saturn …

Researchers say 1st interstellar asteroid likely from double star

New research suggests that the 1st confirmed interstellar asteroid – called ‘Oumuamua by astronomers – likely came from a system where 2 stars orbit each other.

How can you know what to believe?

It’s not surprising that a new study linking extreme winter weather in the U.S. East with a warmer Arctic has drawn fire from global warming skeptics. Should you believe the study or the skeptics?

NOAA issues 2018 US spring weather outlook

NOAA’s 3-month outlook predicts that U.S. will see moderate flooding, and warmer-than-normal temperatures.

See it! Young moon, Venus, Mercury

Wow! So many of you are catching the moon, Venus and Mercury after sunset. Thank you for all your photos. We wish we could post them all!

How did turtles get their shells?

Where did turtles come from? And how did the they get their shells? The answers to these questions would cause scientists to rethink the entire history of reptile evolution.