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Hubble spies exocomets’ plunge into star

Interstellar forecast for a nearby star: Raining comets! The Hubble Space Telescope has discovered doomed, wayward comets plunging into the star HD 172555.

Vesta, brightest asteroid, brightest for 2017

If you’ve never spotted an asteroid, now would be a good time to try. Vesta’s 2017 opposition is around now. Guy Ottewell provides charts and explains more.

Why stars seem brighter this time of year

No matter where you are on Earth on December, January and February evenings, you’re looking toward bright stars in our local spiral arm.

Watch 2017’s 2nd spacewalk Friday

ISS astronauts will work on a complex upgrade to the station’s power system during the January 13, 2017 spacewalk. Spacewalk begins around 7 a.m. EST (1200 UTC) and is expected to last about 6 hours.

EarthSky’s meteor shower guide for 2017

All you need to know about 2017’s major meteor showers! How and when to watch, and more.

Seeking Alpha Centauri’s unseen planets

A new agreement between the European Southern Observatory and Breakthrough Initiatives will let ESO’s Very Large Telescope seek planets in the star system next door.

Hubble peers along Voyagers’ future paths

The Hubble Space Telescope is gazing along the future trajectories of the 2 Voyager spacecraft – launched in 1977 – now heading into uncharted interstellar space.

Mars spacecraft spies Earth and moon

A powerful telescope orbiting Mars gives us a new view of Earth and its moon, showing continent-size detail on Earth and the relative size of the moon.

NASA announces 2 new asteroid missions

NASA’s new Lucy mission will tour 6 Trojan asteroids in Jupiter’s orbit. The other mission will go to 16 Psyche, a metal asteroid.

Black hole bonanza in deep x-ray image

A new ultra-deep X-ray image from Chandra X-ray Observatory has given astronomers their best look yet at the growth of black holes over billions of years, starting soon after the Big Bang.

No double moon in 2017, or ever

Can Mars ever appear as large as the moon in Earth’s sky? Heck no.

Star predicted to explode in 2022

If and when 2 stars in this binary system merge – as predicted – they’ll increase in brightness 10 thousandfold, temporarily becoming a bright star in Earth’s sky.

Spectacular new image of Orion A

Don’t miss these gorgeous images from ESO’s VISTA infrared survey telescope of the Orion Molecular Cloud complex, a place in space where new stars are forming.

Watch year’s 1st spacewalk on Friday

Two ISS astronauts will perform the 1st spacewalk of 2017 on Friday, January 6. Live TV coverage starts at 5:30 a.m. EST (1030 UTC). The spacewalk begins at 7 a.m. EST (1200 UTC).

Home galaxy found for fast radio burst

In a breakthrough study, astronomers pinpointed the location in the sky of a fast radio burst. That let them determine its home galaxy, and improve their theories about its cause.

Aurora alert! Thanks to huge coronal hole

The hole is gigantic and facing Earth’s way. Possible aurora sightings at the latitude of the northern U.S. – for example, in Michigan or Maine – on January 4 and 5.

Will I see the northern lights tonight?

Answers to commonly asked questions about seeing one of nature’s wonders: the aurora borealis or northern lights.

Are perihelion and solstice related?

December solstice 2016 was December 21. Earth is closest to the sun for 2017 on January 4. Coincidence?

Today in science: 1st spacecraft to moon

Some historians believe Luna 1 – a Soviet spacecraft – was supposed to hit the moon. It didn’t but it was the first earthly craft to reach the moon, and sweep past.

Today in science: Discovery of Ceres

Ceres was the first asteroid ever discovered, in 1801, and it’s still the largest body in the asteroid belt. Nowadays, we call it a dwarf planet, and a spacecraft has been orbiting it!