E Nebula

{{more citations needed|date=July 2013}}

{{Infobox nebula

| name = "E" or "Barnard's E" Nebula

| image = 300px

|caption=Barnard's "E" Nebula (B142, 143)

| type = Dark

| epoch = J2000.0

| ra = {{RA|19|40|42}}

| dec = {{DEC|+10|57}}

| dist_ly = 2000

| dist_pc = 613

| appmag_v = –

| size_v = 30 arcmins

| constellation = Aquila

| radius_ly =

| absmag_v = –

| notes = –

| names = Barnard 142, 143

}}

The "E" or "Barnard's E" Nebula (officially designated as Barnard 142 and 143) is a pair of dark nebulae in the Aquila constellation. It is a well-defined dark area on a background of Milky Way consisting of countless stars of all magnitudes, getting its name from its resemblance to the letter E in the Latin alphabet.{{cite news|last=Armstrong|first=Mark|date=21 August 2023|title=Capitalise on Barnard’s giant ‘E’ in the sky|url=https://astronomynow.com/2023/08/21/capitalise-on-barnards-giant-e-in-the-sky/|work=Astronomy Now|access-date=10 October 2023}} Its size is about that of the full moon, or roughly 0.5 degrees, and its distance from earth is estimated at 2,000 light years.