How to Use a Planisphere

planisphere

We use constellations with signs of the zodiac or animals, because these are convenient easy ways of helping to remember where particular stars are. We name the constellations for the shapes their stars make when joined up. Cygnus is in the shape of a swan with wings outstretched, and Scorpius is shaped like a scorpion. Sometimes a shape will be part of a constellation, such as the seven bright stars in Ursa Major that form the saucepan and handle of the Big Dipper.

Continue reading

News

Universe Today

Space and astronomy news

The latest scientific finds made from the first release of Gaia data include illuminating images of the Milky Way galaxy's neighbors.

The post Gaia Looks Beyond our Galaxy to Other Islands of Stars appeared first on Universe Today.

Author: Matt Williams
Posted: December 15, 2017, 6:44 pm

Using data from the Hubble Frontier Fields program, a team of astronomers has produced a study that indicates how globular clusters could be the remnants of dwarf galaxies from the early Universe.

The post Are Little Blue Dots in the Hubble Frontier Fields Precursors to Globular Clusters? appeared first on Universe Today.

Author: Matt Williams
Posted: December 15, 2017, 5:46 pm

Having survived its eight winter in a row, the Opportunity rover continues to operate long past its original, anticipated lifespan.

The post NASA’s Opportunity Rover Withstands Another Harsh Winter on Mars appeared first on Universe Today.

Author: Matt Williams
Posted: December 13, 2017, 10:50 pm

A new study from Purdue University indicates that Earth's atmosphere will break up small meteoroids, which is good news for planetary protection

The post Meteors Explode from the Inside When They Reach the Atmosphere appeared first on Universe Today.

Author: Matt Williams
Posted: December 13, 2017, 7:20 pm

The IAU just approved the names of 86 new stars, the majority of which are derived from Chinese, Hindu, Aboriginal, South African, Coptic, Mayan, and Polynesian traditions.

The post 86 Stars Just got Official Names from the IAU appeared first on Universe Today.

Author: Matt Williams
Posted: December 13, 2017, 3:31 am

What is the most wonderful time of the year? In my opinion, it is when the new Year In Space Calendars come out! This is our most-recommended holiday gift every year and whether it’s the gigantic wall calendar or the spiral-bound desk calendar, the 2018 versions don’t disappoint. They are full of wonderful color images, […]

The post What is the Perfect Gift for Every Space Enthusiast? The Year in Space Calendar 2018! appeared first on Universe Today.

Author: Nancy Atkinson
Posted: December 12, 2017, 11:13 pm

This week’s Carnival of Space is hosted by Brian Wang at his Next Big Future blog. Click here to read Carnival of Space #539 And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space. If you’ve got a space-related blog, you should really join the carnival. Just email an entry […]

The post Carnival of Space #539 appeared first on Universe Today.

Author: Susie Murph
Posted: December 12, 2017, 9:55 pm

Hosts: Fraser Cain (universetoday.com / @fcain) Dr. Paul M. Sutter (pmsutter.com / @PaulMattSutter) Dr. Kimberly Cartier (KimberlyCartier.org / @AstroKimCartier ) Dr. Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg ChartYourWorld.org) Special Guests: Dr. Emilio Enriquez is a Post Doc at the Berkeley SETI Research Center and a member of the Breakthrough Listen Initiative (http://seti.berkeley.edu/listen/). Emilio is the lead […]

The post Weekly Space Hangout – Dec 13, 2017: Emilio Enriquez and SETI’s Breakthrough Listen Initiative appeared first on Universe Today.

Author: Fraser Cain
Posted: December 12, 2017, 9:51 pm

An international team of astronomers has created the largest map of the movements of galaxies within our Supercluster to date.

The post New Map Shows the Motion of all the Galaxies in Our Supercluster appeared first on Universe Today.

Author: Matt Williams
Posted: December 12, 2017, 8:24 pm

Using the Greenbank Radio Telescope, Breakthrough Listen plans to "listen" to 'Oumuamua to see if there are any signs of alien transmissions.

The post Breakthrough Listen is Going to Scan ‘Oumuamua, You Know, Just to be Sure it’s Just an Asteroid and Not a Spaceship. appeared first on Universe Today.

Author: Matt Williams
Posted: December 11, 2017, 11:55 pm